Enabled support for logon request (GET) without a passphrase and instead picking up SSL credentials from the environment.  The standard locations are used where possible: X509_USER_PROXY environment variable, /etc/grid-security etc.
Minor change - pas phrase var name
Fixed bug with "logon -t" option.

_setProxyCertLifetime() could deal with str or int values but script.py
converted the argument into a float.
 * Added the ability to set a credential name.  This is a simple extension to the username and is concatenated with it when passed over the MyProxy protocol in the USERNAME field.  Logon will now fully support authenticate based on a certificate and key used with SSL.  In this case no pass-phrase is required.
 * Also switched proxy lifetime property to accept a float input as well as int or string type.
Include policy file for test CA
== 1.3.0 Release ==
See setup.py for changes in this release.  Fixes in this final revision:
 * Reworked unit tests for better organisation of trust roots generation and disposal.
 * Updated unit test credentials
Remove dependency on local ez_setup - re-release as 1.3.0
 * refactoring to fix use of reserved var names
 * Fix to MyProxyClient.readProxyFile and MyProxyClient.writeProxyFile - make sure it picks up filePath value if set
 * making 1.4.0 release.
Ammended new release version to 1.3.1 - more appropriate for bug fix.
Fixed re-structured text formatting.
Added note about contrib from Nicolas Carenton.
Merge branch 'master' of github.com:philipkershaw/MyProxyClient

Added Github read me.
Changed to README.md