Emoji provider, DDG working, style improvements

package.json

@@ -27,6 +27,7 @@
     "draft-js-export-html": "^0.2.2",
     "draft-js-export-markdown": "^0.2.0",
     "draft-js-import-markdown": "^0.1.6",
+    "emojione": "^2.2.2",
     "favico.js": "^0.3.10",
     "filesize": "^3.1.2",
     "flux": "^2.0.3",
@@ -39,6 +40,7 @@
     "optimist": "^0.6.1",
     "q": "^1.4.1",
     "react": "^15.0.1",
+    "react-addons-css-transition-group": "^15.1.0",
     "react-dom": "^15.0.1",
     "react-gemini-scrollbar": "matrix-org/react-gemini-scrollbar#c3d942e",
     "sanitize-html": "^1.11.1",