don't assume setup.py is run from its directory

when looking for the path to the regexes.yaml file, look relative to the
top directory containing setup.py, but don't assume it's the current
directory.
error out if regexes.yaml isn't where we expect it to be

better to blow up on install, then to install cleanly, but blow up when
somebody tries to use us.
Make python tests pass.

Have python client support v2_replacement and os_v1 and os_v2 replacement.

Python client uses the None value instead of 'Other' when the device isn't found. Make the test reflect that.

The probable correct fix is to make the parse return 'Other' in that case, but this would be a change to the behavior that others are probably depending on.
Update Python client to return 'Other' rather than None for the device.

Fixes #214
Similar to #212 for Java.
elinks is a fork of links

http://en.wikipedia.org/wiki/Elinks
copy and paste fix
fixed tests
Merge branch 'master' into py-setup-fix-again
Install regexes.yaml correctly

This fixes #209, the annoying issue where user_agent_parser
fails at runtime because it can't find regexes.yaml or regexes.json.

Seems to work for:
* `python setup.py develop` in ua-parser itself (as before)
* `python setup.py install` in ua-parser itself (as before)
* `python setup.py install` in some *other* package that
  depends on ua-parser
* `pip install ua-parser`
Fix 'python setup.py install' on Linux; clean up.

* 'python setup.py install' works
* 'python setup.py develop' works
* 'pip install ua-parser' does NOT work (yet)
Fix 'pip install ua-parser'
Merge pull request #268 from georgevreilly/py-setup-build_py_run

Install regexes.yaml correctly
elinks display variations on multiple lines
Merge pull request #256 from philipzae/elinks

Elinks is for fork of Links
Accounts for "iPod touch" in iOS 7.
Merge pull request #273 from grigutis/regexes-ipod

Accounts for "iPod touch" in iOS 7.
golang port
add readme
change default yaml location
update tests, regexes, readme, license