fix and tests for "header" validation using CorniceSchema
repeat pattern from services.decorate_view so that docstrings for views in resources are correct
make sure trim is used on doctring
Fix typo in docstring (list -> tuple)
moved to a still-existing link
use @ryansb link - much better - fixes #139
Merge pull request #142 from nidico/fix-typo-in-docstring

Fix typo in docstring (list -> tuple)
Merge pull request #138 from jmstaley/master

Fix docstring when defining a resource
Merge pull request #134 from amotl/colander-header

fix and tests for "header" validation using CorniceSchema