Fixing typo in example README.
Boolean logic is hard, guys :(

The result of this was that builds were broken on windows and app
engine.

Fixes #59.
Merge pull request #58 from wangjohn/master

Fixing typo in example README.
Update web.go
Merge pull request #61 from RuiAAPeres/patch-1

Update web.go
Document package web/util
Support Tee() in the ReadFrom case as well
Major API change to use context.Context instead of *web.C

The options middleware is currently broken (must be rewritten another way) but it looks like everything else should work fine
Make sure to only allocate a context with valid methods if necessary