Merge branch 'hotfix/secon14' into develop
Remove 'Assemble' slide.
Rewrite presentation link.
imgo scrennshot changed.
grunt-imagemin screenshot added.
glue config example slide added.
grunt spritesmith config changed.
bower screenshots & bower.json example added.
yeoman slides added.
Merge branch 'develop'
Merge branch 'master' into gh-pages