Support loading CSON snippets from TextMate bundles

spec/fixtures/packages/package-with-a-cson-grammar.tmbundle/Snippets/test.cson

@@ -0,0 +1,4 @@
+'name': 'Really'
+'scope': 'source.alot'
+'tabTrigger': 'really'
+'content': 'I really like $1 alot$0'

src/packages/snippets/lib/load-snippets-handler.coffee

@@ -20,8 +20,10 @@ module.exports =
 
       continue if fs.base(snippetsPath).indexOf('.') is 0
       try
-        if object = fs.readPlist(snippetsPath)
-          snippets.push(object) if object
+        if fs.extension(snippetsPath) is '.cson' and object = fs.readObject(snippetsPath)
+          snippets.push(object)
+        else if object = fs.readPlist(snippetsPath)
+          snippets.push(object)
         else
           logWarning()
       catch e

src/packages/snippets/spec/snippets-spec.coffee

@@ -5,6 +5,7 @@ Buffer = require 'buffer'
 Editor = require 'editor'
 _ = require 'underscore'
 fs = require 'fs'
+Package = require 'package'
 
 describe "Snippets extension", ->
   [buffer, editor, editSession] = []
@@ -295,6 +296,22 @@ describe "Snippets extension", ->
         expect(Worker.prototype.terminate).toHaveBeenCalled()
         expect(Worker.prototype.terminate.calls.length).toBe 1
 
+    it "loads CSON snippets from TextMate packages", ->
+      jasmine.unspy(LoadSnippetsTask.prototype, 'loadTextMateSnippets')
+      snippets.loaded = false
+      task = new LoadSnippetsTask(snippets)
+      task.packages = [Package.build(fixturesProject.resolve('packages/package-with-a-cson-grammar.tmbundle'))]
+      task.start()
+
+      waitsFor "CSON snippets to load", 5000, -> snippets.loaded
+
+      runs ->
+        snippet = syntax.getProperty(['.source.alot'], 'snippets.really')
+        expect(snippet).toBeTruthy()
+        expect(snippet.prefix).toBe 'really'
+        expect(snippet.name).toBe 'Really'
+        expect(snippet.body).toBe "I really like  alot"
+
   describe "snippet body parser", ->
     it "breaks a snippet body into lines, with each line containing tab stops at the appropriate position", ->
       bodyTree = snippets.getBodyParser().parse """