Add screenshot to readme

Author: pfonseca23

README.md

@@ -1,8 +1,12 @@
+# Peter Mono
+
+![letters](/media/letters.png "letters.png")
+
+#### Development
 from the root dir,
   * first run `make init` to set up the dependencies
   * edit the svg font and save
   * run `make build` to build and zip the fonts with fontforge
   * run `make install` to install the fonts to your user account (will update if already installed in ~/.fonts/PeterMonoFonts)
 
 > fontforge docs: https://fontforge.github.io/scripting.html
-

media/letters.png

@@ -1,4 +1,4 @@
-#! /usr/bin/fontforge
+#! /usr/local/bin/env fontforge
 # takes multiple svg's, positions and scales glyphs, outputs sfd and otf for each
 i = 1
 while ( i<$argc )