Fix git commit -m #! documentation issue brought up in #462
A few tweaks to the can.Construct documentation based on https://github.com/bitovi/canjs.com/issues/79
Clean up of a leftover sentence from previous commit.
Fix to some old typos in can.Contruct documentation.
Update can.Construct.prototype.init documentation a bit.
Update rest of construct docs, rolls with .extend across the board.
Merge branch 'master' of https://github.com/bitovi/canjs into undelegateBug