www/geeknote: Update to 0.2a (7ea2255)

• Update to 7ea2255 (Fixes Login bug [1])
• No longer need dos2unix
• Deprecate GH_COMMIT

Note: It would be really nice if upstream started 'releasing', or at

least incrementing versions & uploading to PyPi [1]

[1] https://github.com/VitaliyRodnenko/geeknote/issues/269
[2] https://github.com/VitaliyRodnenko/geeknote/issues/212

Reported by: Sergiy Mikhailushko <ooomka yandex ru> (via email)