Correct misspelling
Merge pull request #342 from chivalry/master

Correct spelling error.
Add docstrings for TempFileManager.
Now test.py check the version or tmux.

Version 1.8 also works.
Ahbong is contributer now.
Merge pull request #340 from cwahbong/test-fix

Never rely on waiting for Vim to finish something, instead make it write a file.
Refactor: split test.py into several smaller files.
Test refactorings.
Fix issue #341 (github).