Jumps between multiple windows and views!

- updates the readme.
- sets all of the proper modes.  Exit out of insert mode before and after a jump in vim mode.  This logic doesn't interfere with disabled vintage.
- created Indexer class to help set one time index of words.  This adds new logic to union all of the views words / labels.
- activate_jumpy_mode takes multiple views now.
- added a print to console for jump mode.
- added a restore command mode to centralize the logic in indexer.
- closes #5
- fixes #26