fix(bower.json): update bower.json main attribute to point to dist directory

bower.json

@@ -3,24 +3,31 @@
     "description": "A Markdown to HTML converter written in Javascript",
     "homepage": "https://github.com/showdownjs/showdown",
     "authors": [
-        "Estevão Santos (https://github.com/tivie)",
-        "Pascal Deschênes (https://github.com/pdeschen)",
-        "Corey Innis (https://github.com/coreyti)",
-        "John Fraser"
+      "Estevão Santos (https://github.com/tivie)",
+      "Pascal Deschênes (https://github.com/pdeschen)"
     ],
-    "main": ["src/showdown.js"],
+    "main": ["dist/showdown.js"],
     "ignore": [
-        ".jshintrc",
-        "perlMarkdown/*"
+      ".editorconfig",
+      ".gitattributes",
+      ".gitignore",
+      ".jscs.json",
+      ".jshintignore",
+      ".jshintrc",
+      ".travis.yml",
+      "Gruntfile.js",
+      "package.json",
+      "src/*",
+      "test/*"
     ],
     "repository": {
-        "type": "git",
-        "url": "https://github.com/showdownjs/showdown.git"
+      "type": "git",
+      "url": "https://github.com/showdownjs/showdown.git"
     },
     "keywords": [
-        "markdown",
-        "md",
-        "mdown"
+      "markdown",
+      "md",
+      "mdown"
     ],
     "license": "https://github.com/showdownjs/showdown/blob/master/license.txt"
 }