Library injector

Added a new library injector that can be used to pass through a set of libraries from host to container

Pip bugfix release

• Added injectors folder to MANIFEST.in
• Tweaked the injectors search glob to match only *.py files

0.5 release

• First release published as pip package
• Two new injectors
  • Tty injector for when the process needs input
  • Command aliases allowing one to specify complex command aliases via labels, see the signify image for example
• All example images ported to Fedora 23 base
  • Except for test-descriptions which is based on busybox
• More conservative subprocess usage in introspect_runtime injector
• DRI injector bugfix for NVIDIA devices
• Documentation update

v0.3-alpha Release

First public release