added a few improvements by replacing division and multiplication
operations with powers of two by bit shift operations (where possible)
Merge branch 'pohutukawa-master'

Reverted one line in c255lreduce function as it didn't pass test/test-curve25519.coffee
Simplify file name for the HTML page
Add a simpler to verify test that can also be run in-browser
Merge branch 'master' into gh-pages

Conflicts:
	curve25519.html