Merge pull request #8 from spencer1987/gh-pages

initial version of retrieving contacts list
Setting Up the Action Bar 初稿
添加 ActionBar 章节的所有图片
Merge pull request #9 from spencer1987/gh-pages

translation is completed for retrieving contacts list
Commit Post "Volley - Send Simple Request"
Compile Book for Post "Volley - Send Simple Post"
Update Readme - Post "The Wireless connectivity" is claimed by @acenodie
Setting Up the Action Bar 修正
Merge pull request #10 from vincent4j/gh-pages

Action Bar - Setting Up the Action Bar 初稿
Commit Post Volley - RequestQueue and Request
add "creating-project" and releated images.
Merge pull request #11 from yuanfentiank789/gh-pages

add "creating-project" and releated images.
Action Bar - Adding Action Buttons 上半部分初稿
Action Bar - Adding Action Buttons 下半部分初稿
Action Bar - Adding Action Buttons 校对
Action Bar - Setting Up the Action Bar：错别字纠正
Running Your App
Update Readme - Ppst "Notification" is claimed by fastcome1985
Merge pull request #12 from vincent4j/gh-pages

Action Bar - Adding Action Buttons
Merge pull request #13 from yuanfentiank789/gh-pages

Running Your App