Merge branch 'release/0.0.2' into develop
Moved the viminfo file into .vim/tmp/viminfo
Added gundo bundle. Visualised undo tree.
Add yankring activation comment to README.
Add Gundo to bundle list in README.

Includes activation note (F5).
Updated release notes for 0.0.3: Added gundo plugin.
Releasing 0.0.3: Add gundo undo tree visualisation plugin