Add option to search through all windows.

Fixes #2.

Match icon colors with popup color scheme.

Icon colors match popup UI.

New logo and popup icon.

Plus, fix windows problems mentioned in #1.

Fix bug where popup did not close after selection.

Also, introduced 38x38 icon for high resolution screens.

Update bootstrap to v2.3.2.

• Introduce yeoman workflow for development.
• Update boostrap dependency.