Added loading options from pytest.ini
Added loading options from pytest.ini

Things Added:
1. CollectIniPathPlugin which acts as a pytest plugin and does a dry-run of pytest to capture the ini path in CollectorIniPath.pytest_ini_path class variable
2. Load "pytest-watch" section from that ini and read the options
3. Mix that option with cmdline args, giving preference to cmdline values

Todo:
1. Add proper tests for ini args loading
2. Refactor string and boolean variable loading code to diff. func, whole thing looks bad now

joeyespo/pytest-watch