NOT WORKING initial kobo light support.
Merge branch 'master' of https://github.com/koreader/koreader
Merge pull request #174 from giorgio130/master

WIP kobo light support
fix require error
update koreader-base for crengine update
Merge pull request #175 from houqp/houqp-master

fix require error
Merge pull request #177 from houqp/houqp-master

update koreader-base for crengine update