Modify converter classes, removed redundant code
Typo fix
Typo fix
Change return value of converter command.
Modify html to pdf converter for more proper use of existing func.
Modify html to txt converter for new functions.
Modify execution of html to pdf converter
Modify pdf to html converter.
Change handle failed conversion
Remove redundant code
Change destication directory for pdf to html converter.
Merge pull request #46 from Aplopio/modify-converter-classes

Modify converter classes