Update README.md
Updates some typos as pointed out by Nathan Soliz

Fixes book icon in icon set
Fixes definitions appearing improperly on some pages
fixes less files getting into wrong folders of grunt build, fixes text on variations page
Tiered menu: fixes active items to have top border like rest of menus
tiered menu: fixes sub menu active item color
text menu: fixes box shadow from appearing
Begin copy writing for contributions
Continuing to write copy
Fixes #34 issues with scrolling menu on definition page
missing space in sentence
temporarily removes reference to roadmap
removes undocumented error state for buttons, adds in draft components
removes old fonts, moves draft elements to doc files
Merge branch 'dev' of github.com:jlukic/Semantic-UI into dev

Conflicts:
	node/src/files/release/semantic.zip
fixes edit in css guide
fixes #35, cursor on toggle in chrome
fixes #36, chrome causes stuttering (subpixel antialiasing change?)  on animating opacity
fixes #39, inheritance issue from menu dropdown
rebuilds packages