Use ember-font-awesome vs. ember-cli-font-awesome. (#102)

Subtle distinction, but since this is an Ember >2.3 app, you should use
the flavor without the `cli`. This squashes those pesky build-time
warnings about overriding `init` without `_super`.

package.json

@@ -29,7 +29,6 @@
     "ember-cli-blanket": "0.9.5",
     "ember-cli-dependency-checker": "^1.2.0",
     "ember-cli-es5-shim": "0.3.0",
-    "ember-cli-font-awesome": "1.5.2",
     "ember-cli-github-pages": "^0.1.0",
     "ember-cli-htmlbars-inline-precompile": "^0.3.1",
     "ember-cli-inject-live-reload": "^1.4.0",
@@ -44,6 +43,7 @@
     "ember-code-snippet": "^1.2.1",
     "ember-data": "^2.6.0",
     "ember-export-application-global": "^1.0.5",
+    "ember-font-awesome": "2.1.1",
     "ember-load-initializers": "^0.5.1",
     "ember-lodash": "0.0.10",
     "ember-resolver": "^2.0.3",