Update project_and_code_guidelines.md

Fixes ribot#31 - number issues within 2.2.x

Author: ed-george

project_and_code_guidelines.md

@@ -153,7 +153,7 @@ public class MyClass {
 }
 ```
 
-### 2.2.3 Treat acronyms as words
+### 2.2.2 Treat acronyms as words
 
 | Good           | Bad            |
 | -------------- | -------------- |
@@ -162,7 +162,7 @@ public class MyClass {
 | `String url`     | `String URL`     |
 | `long id`        | `long ID`        |
 
-### 2.2.4 Use spaces for indentation
+### 2.2.3 Use spaces for indentation
 
 Use __4 space__ indents for blocks:
 
@@ -179,7 +179,7 @@ Instrument i =
         someLongExpression(that, wouldNotFit, on, one, line);
 ```
 
-### 2.2.5 Use standard brace style
+### 2.2.4 Use standard brace style
 
 Braces go on the same line as the code before them.
 
@@ -212,9 +212,9 @@ if (condition)
     body();  // bad!
 ```
 
-### 2.2.6 Annotations
+### 2.2.5 Annotations
 
-#### 2.2.6.1 Annotations practices
+#### 2.2.5.1 Annotations practices
 
 According to the Android code style guide, the standard practices for some of the predefined annotations in Java are:
 
@@ -224,7 +224,7 @@ According to the Android code style guide, the standard practices for some of th
 
 More information about annotation guidelines can be found [here](http://source.android.com/source/code-style.html#use-standard-java-annotations).
 
-#### 2.2.6.2 Annotations style
+#### 2.2.5.2 Annotations style
 
 __Classes, Methods and Constructors__
 
@@ -245,13 +245,13 @@ Annotations applying to fields should be listed __on the same line__, unless the
 @Nullable @Mock DataManager mDataManager;
 ```
 
-### 2.2.7 Limit variable scope
+### 2.2.6 Limit variable scope
 
 _The scope of local variables should be kept to a minimum (Effective Java Item 29). By doing so, you increase the readability and maintainability of your code and reduce the likelihood of error. Each variable should be declared in the innermost block that encloses all uses of the variable._
 
 _Local variables should be declared at the point they are first used. Nearly every local variable declaration should contain an initializer. If you don't yet have enough information to initialize a variable sensibly, you should postpone the declaration until you do._ - ([Android code style guidelines](https://source.android.com/source/code-style.html#limit-variable-scope))
 
-### 2.2.8 Order import statements
+### 2.2.7 Order import statements
 
 If you are using an IDE such as Android Studio, you don't have to worry about this because your IDE is already obeying these rules. If not, have a look below.
 
@@ -269,7 +269,7 @@ To exactly match the IDE settings, the imports should be:
 
 More info [here](https://source.android.com/source/code-style.html#limit-variable-scope)
 
-### 2.2.9 Logging guidelines
+### 2.2.8 Logging guidelines
 
 Use the logging methods provided by the `Log` class to print out error messages or other information that may be useful for developers to identify issues:
 
@@ -299,7 +299,7 @@ To only show logs on debug builds:
 if (BuildConfig.DEBUG) Log.d(TAG, "The value of x is " + x);
 ```
 
-### 2.2.10 Class member ordering
+### 2.2.9 Class member ordering
 
 There is no single correct solution for this but using a __logical__ and __consistent__ order will improve code learnability and readability. It is recommendable to use the following order:
 
@@ -362,7 +362,7 @@ public class MainActivity extends Activity {
 }
 ```
 
-### 2.2.11 Parameter ordering in methods
+### 2.2.10 Parameter ordering in methods
 
 When programming for Android, it is quite common to define methods that take a `Context`. If you are writing a method like this, then the __Context__ must be the __first__ parameter.
 
@@ -378,7 +378,7 @@ public User loadUser(Context context, int userId);
 public void loadUserAsync(Context context, int userId, UserCallback callback);
 ```
 
-### 2.2.13 String constants, naming, and values
+### 2.2.11 String constants, naming, and values
 
 Many elements of the Android SDK such as `SharedPreferences`, `Bundle`, or `Intent` use a key-value pair approach so it's very likely that even for a small app you end up having to write a lot of String constants.
 
@@ -407,7 +407,7 @@ static final String EXTRA_SURNAME = "com.myapp.extras.EXTRA_SURNAME";
 static final String ACTION_OPEN_USER = "com.myapp.action.ACTION_OPEN_USER";
 ```
 
-### 2.2.14 Arguments in Fragments and Activities
+### 2.2.12 Arguments in Fragments and Activities
 
 When data is passed into an `Activity` or `Fragment` via an `Intent` or a `Bundle`, the keys for the different values __must__ follow the rules described in the section above.
 
@@ -439,7 +439,7 @@ __Note 1__: These methods should go at the top of the class before `onCreate()`.
 
 __Note 2__: If we provide the methods described above, the keys for extras and arguments should be `private` because there is not need for them to be exposed outside the class.
 
-### 2.2.15 Line length limit
+### 2.2.13 Line length limit
 
 Code lines should not exceed __100 characters__. If the line is longer than this limit there are usually two options to reduce its length:
 
@@ -451,7 +451,7 @@ There are two __exceptions__ where it is possible to have lines longer than 100:
 * Lines that are not possible to split, e.g. long URLs in comments.
 * `package` and `import` statements.
 
-#### 2.2.15.1 Line-wrapping strategies
+#### 2.2.13.1 Line-wrapping strategies
 
 There isn't an exact formula that explains how to line-wrap and quite often different solutions are valid. However there are a few rules that can be applied to common cases.
 
@@ -503,7 +503,7 @@ loadPicture(context,
         "Title of the picture");
 ```
 
-### 2.2.16 RxJava chains styling
+### 2.2.14 RxJava chains styling
 
 Rx chains of operators require line-wrapping. Every operator must go in a new line and the line should be broken before the `.`