Rename docs-dist to gh-pages

- And also added gh-pages to git ignore and npm ignore.

Author: rohitkr

.angular-cli.json

@@ -6,7 +6,7 @@
   "apps": [
     {
       "root": "src",
-      "outDir": "docs-dist",
+      "outDir": "gh-pages",
       "assets": [
         "assets",
         "favicon.ico"

.gitignore

@@ -40,3 +40,6 @@ testem.log
 # System Files
 .DS_Store
 Thumbs.db
+
+# Docs generated directory
+gh-pages/

.npmignore

@@ -28,5 +28,7 @@ Desktop.ini
 
 # Source files
 src/
-docs-dist/
 aot/
+
+# Docs generated directory
+gh-pages/