Initial commit.
Fixed integration tests.
Use google-translate-listen-program.

By default it is nil. User must put there the program to listen
translations. For example user can put there "mplayer". Of course
mplayer needs to be installed and needs to be located somewhere in the
PATH.
Add doc for google-translate-listen-button-face
Update doc for `google-translate-listen-program'
Minor change
Fix wrong doc string
Add documentation for `google-translate-listen-button-face'
Update documentation for `google-translate-listen-program'
Merge pull request #14 from atykhonov/translation-listening

Listen translations
Look for executable to listen translations.

Look for `mplayer' in the PATH and set it as default program to listen
translations.
Bump version to 0.9.1
Make buttons clickable by left mouse button.
Bump version to 0.9.2
Allow to debug lestening translation.