Merges branch 'release/0.1.2' into develop
Adds License
Upgrades to speckle 0.1.23
Documents use of variant "ember:custom"
Documents use of custom variant.
Merges branch 'feature/document-custom-variant' into develop
Fixes default styles for handlebars files.

Closes #1, Thanks @mutewinter.
Upgrades to riml 0.3.4 and speckle 0.1.24.
Bumps version to 0.1.3
Build 0.1.3
Merges branch 'release/0.1.3'