Enable descriptive tooltips for Toolbar buttons

This commit fixes #7 by enabling tooltip descriptions on all buttons on
BudgieControlBar. Currently we ignore tooltips for CSD buttons because
it should really be obvious what they do.
Merge pull request #8 from davidzchen/master

Minor changes
Fix indentation in build instructions
Merge pull request #9 from davidzchen/master

Add README.mkd correctly for make dist
Migrate to budgie-1.db

We now have some simple migration code that will check for the existence
of unique file names specific to Budgie, and then attempt to delete
those files. When we start, we then have an empty database, and should
attempt to recreate our file index.