added prefixer mixin
vendor mixin added deprecated flag & make use of prefixer
extended m-height mixin to use min- or max- height
updated blocs to comply with new prefixer mixin
extended m-margin-bottom mixin with important option
removed animation mixin
remove animated media queries
updated mixins with:
- font face shorthand
- display inline-block shorthand
- Timing functions
- Position shorthand mixin
- Renewed animations mixins
- removed prerequisite of compass in readme
- removed test data