Add find_library
Merge pull request #14 from ViralBShah/master

Add find_library
Use dlopen_e in find_library
Add add_library_mapping to find_library
Fix find_library add_library_mapping signature
Merge pull request #15 from carlobaldassi/patch-1

Fix find_library add_library_mapping signature
Update find_library to be more flexible.
Small update to find_library
deprecate BinDeps.find_library
basic outline of system package manager integration
New high-level interface for BinDeps
Merge branch 'jn/system'

Conflicts:
	src/BinDeps.jl
Add URIParser to requirements
Make BinDeps working with master
Make work on Linux
More Autotools features
Fix typo
Start working on documentation
Fix #20
Actually fix #20