Changing to builder pattern. Finished button, toggle, slider. DDL still WIP
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/color.rs

Fixing tiny merge conflict, nothing significant.
API Overhaul, now uses Builder Pattern, closes #112
Merge pull request #116 from mitchmindtree/master

Total API Overhaul - changed all widgets over to "Builder Pattern" - Closes #112.