Fix benchmarks.
Remove demo.html.
Better name for internal function.

Also throw TypeError instead of Error in case of bad types.
Add missing type check in nacl.hash().
Nit; rebuild.
Remove comment.
Fix things found by JSHint.
Add overheadLength and sharedKeyLength constants.
Documentation!

Closes #7.
Document nacl.randomBytes.
More randomBytes docs.
Add TOC to docs.
Fix typo.
Fix encodeUTF8.
Doc: formatting.
Missed one while -> for loop.
Add link to demo.