Add slack notification

Author: shazron

.travis.yml

@@ -3,12 +3,14 @@ sudo: false
 git:
   depth: 10
 node_js:
-  - "0.10"
-  - "0.12"
-  - "4"
-  - "6"
+- '0.10'
+- '0.12'
+- '4'
+- '6'
 install:
-  - npm install
-
+- npm install
 script:
-  - "npm test"
+- npm test
+notifications:
+  slack:
+    secure: gn0YH0MCFOYR3Dd8Vsx3K/J9G0aazhnRjQVfqbeRKN3f6vToKif1CxhiDLXI6cxEB5DBiAtpK58jkoDYrXoNLGuSbiTHBJ+ankU8aG3s0OTIHa/8I0TjRKjBRc0PrMV7n7EiLC6LQxNe0x0mMSE1gdOUeS1UrZ5ZiVrS1u0eHHs=