Update gumby.tabs.js

this fixes nested tabs
Merge branch 'release/2.6.1' into develop
Update README.md

Added note about using 1.0.6 modular scale if you are installing it via a gem.
Update _entypo.scss

Replace raw glyphs with character entities
Compile Sass
Merge branch 'gmcquistin-master' into develop
Merge branch 'SeanZX85-master' into develop
Merge branch 'master' of https://github.com/lucax88x/Gumby into lucax88x-master
Compile Gumby JS
Merge branch 'lucax88x-master' into develop
Note regarding changelog in README
Bump bower.json version number
Merge branch 'release/2.6.2' into develop
Merge branch 'hotfix/2.6.3' into develop

Conflicts:
	bower.json
upgrade bundled modular-scale to v2.0.5
- adjust references to $ratio to use $ms-ratio and golden() to $golden.
- use px value for $base-line-height as ms(1) no longer defaults to 26px like modular-scale v1 did
- resolves GumbyFramework/Gumby#219
recompile demo css
Merge branch 'feature/modular-scale-v2.x'