WIP: Berksfile support
Make littlechef deploy_chef run withour any arguments on standard systems.
Add support for auto installing chef if autodeploy_chef is enabled in ocnfig file.
Fixes requested by tobami@
Reword autodeploy_chef config option as requested by tobami@
Rework CHEF berksfile support. If berksfile_dir is not used create temporary one.
Add support for adding http_proxy to solo.rb.
Add documentation for proxy support plus add support for https.
Merge remote-tracking branch 'origin/master' into berksfile_support

Conflicts:
	littlechef/runner.py
Implement fixes requested by tobami.
Merge branch 'solo_http_proxy' into devel
Merge branch 'deploy_chef_fix' into devel
Add version constrain to jinja2.
Remove unnecessary if.
Merge branch 'berksfile_support' into devel
Merge branch 'solo_http_proxy' into devel
Add Berksfile documentation.
Merge branch 'berksfile_support' into devel
import tempfile for temporary directory creation.
Add support for synchronizing temporary berkshelf directory to a node and run chef-solo from it.