first crack at psm flag
add check for missing dependency
changed args to match style of other ones
small fix: add nod to extract_options
a little bit oc cleanup
Rename option & rework invocation.
Make check for OSD 2ndary if tesseract is found.
Add test for orientation-free OCRing.
Add explanation for test & bump gem version
Use clearer pdf fixture for tests.
Add auto runner.
Extract individual pages in orientation test.
Fix defaults & move PSM flags to single location.
make sure that non-english languages aren't run through the english text cleaner.
Add doc section on --language flag and orientation detection (closes #117).
Close 109
Add release notes.