bower.json should not be excluded from the package

Several build systems (such as Sprockets), rely on either bower.json, or
package.json being included with `bower install`.

bower.json

@@ -15,7 +15,6 @@
 	"ignore": [
 		"**/.*",
 		"*.md",
-		"bower.json",
 		"docs",
 		"editor",
 		"examples",