Explain HttpErrors in the exception message
Merge pull request #15 from cbeer/better_errors

Explain HttpErrors in the exception message
Show the error message within the SaveException
Merge pull request #17 from cbeer/better_save_error

Show the error message within the SaveException
move require 'faraday' to Client::Methods
Remove unused Resource.create method
LDP::Resource#create should accept a subject that is an existing absolute url within the LDP server