Ensure that Jinja2>=2.8 is installed
Ensure that Jinja2>=2.8 is installed

The `FileSystemLoader` class inside Jinja2 added the `followlinks`
keyword argument in version 2.8. This keyword is being used in
`molecule/utilities.py` and produces a runtime error when the system
with Molecule installed has an older version of Jinja2 installed.

Resolves #149

cimarron-pistoncloud/molecule,rjfellman/molecule,rgreinho/molecule,j0lly/molecule,metacloud/molecule,j0lly/molecule,rjfellman/molecule,metacloud/molecule,rgreinho/molecule,rjfellman/molecule,cimarron-pistoncloud/molecule,kharkevich/molecule,retr0h/molecule,cimarron-pistoncloud/molecule,retr0h/maquina,rgreinho/molecule,j0lly/molecule,kireledan/molecule,metacloud/molecule