chore(bower): upgrade bower dependency, prepare for release

Author: SyntaxRules

bower.json

@@ -13,6 +13,7 @@
     ".*",
     "Gruntfile.js",
     "package.json",
+    "karma.conf.js",
     "src",
     "test"
   ],
@@ -21,13 +22,14 @@
     "url": "https://github.com/showdownjs/ng-showdown.git"
   },
   "dependencies": {
-    "showdown": "1.0.*",
+    "showdown": "1.x",
     "angular": ">=1.3.0 <2.0.0",
     "angular-sanitize": ">=1.3.0 <2.0.0"
   },
   "keywords": [
     "markdown",
     "showdown",
+    "ng-showdown",
     "md",
     "mdown",
     "angular"