Merge pull request #15 from fergalwalsh/master

Speed up repeated conversions between the same currency pairs
Bump version
Merge pull request #16 from fergalwalsh/master

Speed up update process
Bump version
Use install_requires for openexchangerates, remove
requirements.txt
We're dependent on openexchangerates as we have
defined it as the default adapter.
Bump version
Fix some information in the readme.
Merge pull request #17 from rvause/master

Fix some information in the readme. Thanks @rvause
Update README.rst

my_price does not have a convert method. Also converting to 'YEN' did not work for me.
Update README.rst

updated output
Merge pull request #23 from tatterdemalion/master

Updated Documentation
Merge remote-tracking branch 'metglobal/master'

Conflicts:
	exchange/__init__.py