Removed an uneeded Check.
Merge branch 'master' of github.com:HoTT/HoTT

Conflicts:
	theories/HSet.v
Merge branch 'master' of git://github.com/HoTT/HoTT
Starting to try S^1 as a private inductive type
a better proof of path_universe_inverse
comment out "Local" so it ought to compile without private types patch
finish the proof that pi1(S1)=Z
remove superfluous @s on transport
call it S1_rect
remove a superfluous eta-expansion
Added contrib/HoTTBook.v
Simplify proof of S1_rectnd_beta_loop using apD_const
Move Circle.v to theories/hit directory
theories/hit/README
hit/Interval
Updated installation instructions
Merge pull request #88 from mikeshulman/circle

HITs: S1 and Interval
Merge branch 'master' of github.com:HoTT/HoTT
moved README to README.txt
Add Kristina's better proof that IsEquiv is an hprop.