Merge pull request #21 from davidhodo/master

add option to not use clang so i can use this in bitbake
Adding explicit keyword to Timeout constructor to prevent accidental conversion from int types.
Added the `rt` library to the `serial_LIBRARIES` variable when on Linux.
Updated the tests for the new Serial API.
Fixed linking on Linux and OS X.
Release v1.0.1
Removing old build files.
Adding catkin build files and a new Makefile.
Updating the README.md
Releasing version 1.1.0 of serial

Converted the build system to caktin
Added a link option specifically for Linux
alloca.h does not exist on OpenBSD either.
Trying travis-ci out.
Change to the travis.yml file
Added groovy source setup.bash to travis.yml
Update README.md

Added links to documentation.
Removed rt linking on OS X. Fixes #24.
Merge branch 'master' of https://github.com/wjwwood/serial
Small CMakeLists.txt touch ups.
Version 1.1.1