Merge branch 'release/0.3.15' into develop
Fix warnings about <::
Fix decode test to actually decode message from stdin
Clarify the instructions for running tests.
Merge pull request #14 from amluto/develop

Clarify the instructions for running tests.
Add ability for from_bytes to create Builders
Update benchmarks to not use files for input/output
Fix travis build to point at v0.3 explicitly
Fix travis build file
Added better docs for installation

* Xcode 5 instructions
* changed from using `pip install .` to `pip install ./pycapnp`
* Added note about using 0.4.x versions of libcapnp
Add bitdeli
Fix exception handling for reading/writing
Bump version for v0.3.16
Merge branch 'release/0.3.16'
Merge branch 'release/0.3.16' into develop
Add ReaderOptions to read/read_packed/from_bytes
Bump version for v0.3.17
Merge branch 'release/0.3.17'