Add 100% compat with current 0.10.x admin
update README with admin's helper
Update plugins/old_admin.rb

update
fix name file
update name file
fix error
update
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'

Conflicts:
	README.md
Merge remote-tracking branch 'upstream/master'
fix issue #50
real fix issue #50, sorry
Merge branch 'master' into fix-sampleblog