prosper_version forgets version on reinstall

[lockefox]

Though prosper_version tools work fine for clean installs, reinstall causes issues. Git checking is causing problems in dependent Travis jobs where it looks up the "current running version" rather than version.txt

Running ProsperCommon-1.1.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-fokg7r3h/ProsperCommon-1.1.1/egg-dist-tmp-wx98dp8f
package init file 'prosper/__init__.py' not found (or not a regular file)
zip_safe flag not set; analyzing archive contents...
prosper.common.__pycache__._version.cpython-35: module references __file__
prosper.common.__pycache__.prosper_config.cpython-35: module references __file__
prosper.common.__pycache__.prosper_logging.cpython-35: module references __file__
creating /home/travis/build/EVEprosper/ProsperBots/.eggs/ProsperCommon-0.1.0-py3.5.egg
Extracting ProsperCommon-0.1.0-py3.5.egg to /home/travis/build/EVEprosper/ProsperBots/.eggs
Installed /home/travis/build/EVEprosper/ProsperBots/.eggs/ProsperCommon-0.1.0-py3.5.egg
Traceback (most recent call last):
  File "setup.py", line 165, in <module>
    'fast': QuickTest
  File "/opt/python/3.5.3/lib/python3.5/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/opt/python/3.5.3/lib/python3.5/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/opt/python/3.5.3/lib/python3.5/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/home/travis/virtualenv/python3.5.3/lib/python3.5/site-packages/setuptools/command/test.py", line 203, in run
    installed_dists = self.install_dists(self.distribution)
  File "/home/travis/virtualenv/python3.5.3/lib/python3.5/site-packages/setuptools/command/test.py", line 194, in install_dists
    ir_d = dist.fetch_build_eggs(dist.install_requires)
  File "/home/travis/virtualenv/python3.5.3/lib/python3.5/site-packages/setuptools/dist.py", line 446, in fetch_build_eggs
    replace_conflicting=True,
  File "/home/travis/virtualenv/python3.5.3/lib/python3.5/site-packages/pkg_resources/__init__.py", line 858, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'ProsperCommon~=1.1.1' distribution was not found and is required by the application

[lockefox]

maybe add something like

if 'site-packages' in HERE:
    version = file_version

[lockefox]

Fixed in v1.1.2