add support for Rust (#89)

* Update languages.json

* Update main.js

Author: 54696d21

src/renderer/assets/data/languages.json

@@ -103,6 +103,10 @@
     "name": "ruby",
     "extension": "rb"
   },
+  {
+    "name": "rust",
+    "extension": "rs"
+  },
   {
     "name": "scss",
     "extension": "scss"

src/renderer/main.js

@@ -39,6 +39,7 @@ require('brace/mode/powershell');
 require('brace/mode/python');
 require('brace/mode/r');
 require('brace/mode/ruby');
+require('brace/mode/rust');
 require('brace/mode/scss');
 require('brace/mode/sh');
 require('brace/mode/sql');