installing a resource using the resource installer class

    >>> from releasemanager.installer.releasedaemon import ReleaseInstaller
    >>> from releasemanager.tests.mock.resource import MockResource
    >>> test_identifier = 'http://svn.fake.com/svn/project/trunk; 9999'
    >>> environment = 'test'
    >>> target = 'template'
    >>> resource = MockResource('test').data
    >>> ri = ReleaseInstaller('release_installer_template')
    >>> ri.install(environment, target, resource, test_identifier)
    True
    >>> environment = 'broken'
    >>> ri.install(environment, target, resource, test_identifier)
    False
    >>>                                                                           
