Re-add note about PyPI which got removed from the docs

Refs #34.
Add troubleshooting info for Windows gVim + git users

Closes #36.
Fix padding issue with single-sided statuslines
Update terminal segments and default theme
Move terminal prompt script to extension directory
Create terminal/prompt color scheme
Move segments.core packages out of subdirectories
Update theme/colorscheme name properties
Update memoize class and add support for persistent cache
Create tmux segments

Refs #44.
Cleanup Python files to comply better with PEP 8

Removed excessive newlines and comments, and fixed whitespace issues.
Merge branch 'develop' into feature/tmux

Conflicts:
	powerline/ext/tmux/segments.py
Rename default colorscheme
Add right/left options to tmux script
Create neutral tmux colorscheme
Enable tmux segments
Merge branch 'feature/tmux' into develop

Closes #41.
Closes #43.
Closes #44.
Add Liam Curry to contributors list

Refs #44.
Separate colorschemes by extension

Refs #45.
Make mode_translations optional in colorschemes