more info in the README
Fixed config issues in #initialize

Headers option was not merging properly. :content_type and :accept
was deleted when a user redefined headers.
Merge pull request #16 from tstrachota/resource_config

Fixed config issues in Base#initialize
Merge pull request #15 from lzap/better-readme

more info in the README
Updated bindings for Foreman 1.2
Bump to 0.1.4