Merge pull request #1 from QingLin2013/master

linqing commit test1
Update RenameFiles.rb
Create ReadFile.rb

buggy
Update ReadFile.rb

Fixed some bugs.
Create vocab_bank_fake_small
Create TestReadFile.rb
Update TestReadFile.rb
Update TestReadFile.rb
Update TestReadFile.rb
Update TestReadFile.rb
new version
Update ReadFile.rb
Update ReadFile.rb

Added file-exporting function
lin's test
Merge remote-tracking branch 'dynamicRepoStream/master'
df
vocab backup and refactor
Merge branch 'master' of github.com:QingLin2013/ExerciseForRuby
Conflicts:
	RenameFiles.rb