Update some legacy references to Twitter (#22)

* Update contrib licence links

* Make legacy URL fragments relative

* Change repository field in component.json

CONTRIBUTING.md

@@ -97,5 +97,5 @@ commits.
 By contributing your code:
 
 You agree to license your contribution under the terms of the MIT (for code) and CC-BY (for graphics) licenses
-<https://github.com/twitter/twemoji/blob/gh-pages/LICENSE>
-<https://github.com/twitter/twemoji/blob/gh-pages/LICENSE-GRAPHICS>
+<https://github.com/jdecked/twemoji/blob/gh-pages/LICENSE>
+<https://github.com/jdecked/twemoji/blob/gh-pages/LICENSE-GRAPHICS>

LEGACY.md

@@ -22,7 +22,7 @@ Following are all the methods exposed in the `twemoji` namespace.
 
 This is the main parsing utility and has 3 overloads per parsing type.
 
-There are mainly two kinds of parsing: [string parsing](https://github.com/twitter/twemoji#string-parsing) and [DOM parsing](https://github.com/twitter/twemoji#dom-parsing).
+There are mainly two kinds of parsing: [string parsing](#string-parsing) and [DOM parsing](#dom-parsing).
 
 Each of them accepts a callback to generate an image source or an options object with parsing info.
 

component.json

@@ -17,7 +17,7 @@
     "name": "Twitter, Inc.",
     "web": "https://github.com/twitter/"
   },
-  "repository": "twitter/twemoji",
+  "repository": "jdecked/twemoji",
   "main": "twemoji.js",
   "scripts": [
     "twemoji.js"