Added bower package definition.

Added bower package definition (bower.js) that mirrors the package.json
for the project. Will allow the project to be used via bower either
directly from the repository or via bower install directly, if it was
registered. More information here: http://bower.io

bower.json

@@ -0,0 +1,28 @@
+{
+  "name": "gl-matrix",
+  "version": "2.2.0",
+  "homepage": "http://glmatrix.net",
+  "authors": [
+    "Brandon Jones <tojiro@gmail.com>",
+    "Colin MacKenzie IV <sinisterchipmunk@gmail.com>"
+  ],
+  "description": "Javascript Matrix and Vector library for High Performance WebGL apps",
+  "main": "dist/gl-matrix.js",
+  "ignore": [
+    "**/.*",
+    "jsdoc-template",
+    "spec",
+    "src",
+    "tasks",
+    "Gemfile",
+    "Gemfile.lock",
+    "Rakefile",
+    "TESTING.md"
+  ],
+  "keywords": [
+    "webGL",
+    "matrix",
+    "vector"
+  ],
+  "license": "BSD"
+}