Added better print methods for distinguishing between info and error … #53
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I changed printing to a new (future proof) method and changed the output a bit.
My reasoning behind this is the following:
I am currently writing a nodejs wrapper to build a RESTful API to use ocropy over the web. To be able to easily distinguish if an operation ran correct or not I need to check if ocropy wrote to stderr or not.
If you can agree with these changes, I could add the same printing to the other ocropy methods as well.