Add SingletonUtils
Add read raw or assets file to list
remove android version digit
Add a method to get descended views
Merge pull request #8 from arai-wa/master

Add a method to get descended views
Code format
Add getStringList from JSON
Add getStringCascade getJSONObjectCascade for JSONUtils
Add isApplicationInBackground for AppUtils
Delete dbHelper.getReadableDatabase
Modify javadoc
Add weibo
Add my info
Add Maven
Modify return type of getCacheControlMaxAge to long
Add private constructor
Add CollectionUtils.java
Add NetWorkUtils.java
Add NetWorkUtils.java
Modify join function