Fix typo
Merge branch 'master' into gh-pages
Fix typos
Merge branch 'master' into gh-pages
Fix typos
Merge branch 'master' into gh-pages
Fix code smaple formatting for basic css example
Merge branch 'master' into gh-pages
Minor edits
Merge branch 'master' into gh-pages
Add slide about LESS and SASS
Merge branch 'master' into gh-pages
Add slide about W3C and how terrible W3Schools is.
Merge branch 'master' into gh-pages