Merge pull request #19 from onyx-peekaboo/master

Read the menu dictionary null pointer exception
更改coolreader中toast字符串到strings.xml中
Merge pull request #20 from onyx-cap/master

coolreader Tosate 字符串更改到strings.xml中
crengine:Read the menu to add the screen refresh menu item
Merge remote-tracking branch 'origin/master'