Adding support for using V1Configuration with a proxy.
Merge branch 'master' of github.com:versionone/VersionOne.SDK.Java.APIClient

Conflicts:
	src/main/java/com/versionone/apiclient/EnvironmentContext.java
	src/main/java/com/versionone/apiclient/IModelsAndServices.java
	src/test/java/com/versionone/apiclient/tests/EnvironmentContextTester.java