Merge pull request #28 from JYYZrubik/master-for-93

OK for branch ?
Merge pull request #29 from JYYZrubik/master-for-93

Add teach for new githuber
Merge pull request #30 from JYYZrubik/master-for-93

charset for w3c
Merge pull request #31 from JYYZrubik/master-for-93

Add some tags
Merge pull request #32 from JYYZrubik/master-for-93

AIDE for PG was updated!
Merge pull request #33 from JYYZrubik/master-for-93

Correctly close tag for XHTML?
Merge pull request #34 from JYYZrubik/master-for-93

Or this time?
Merge pull request #35 from JYYZrubik/master-for-93

Ok for HTML5?
Merge pull request #36 from JYYZrubik/master-for-93

&...&amp;...
Merge pull request #37 from JYYZrubik/master-for-93

Ah, ul must in li.
Merge pull request #38 from JYYZrubik/master-for-93

Semantic ?
Merge pull request #39 from JYYZrubik/master-for-93

Master for 93
Merge pull request #40 from JYYZrubik/master-for-93

COLLaborator part3 finish
Merge pull request #41 from JYYZrubik/master-for-93

Add tutorial
Merge pull request #42 from JYYZrubik/master-for-93

Add a history
Clone OK?