Remove metadata.json and update application readme.
Remove metadata.json and update application readme.

* Metadata.json can be generated with the rake tasks.
* Use 'metadata[cookbook]' and 'metadata_all' to generate .json.
* Application readme needed a few more clarification points.

autoclone/rsyslog,phusion/rsyslog,priestjim/rsyslog,protec-cookbooks/rsyslog,groknix/rsyslog,arkency/rsyslog,GannettDigital/chef-rsyslog,Limecraft/rsyslog,voroniys/rsyslog,hipsnip-cookbooks/rsyslog,adepue/rsyslog,jblaine/rsyslog,WIU/rsyslog,realloc/cookbook-rsyslog,rcbops-cookbooks/rsyslog,bkw/rsyslog,chef-cookbooks/rsyslog,chef-cookbooks/rsyslog,strebitz/rsyslog,GannettDigital/chef-rsyslog,slbmeh/rsyslog,ericfeldhusen/rsyslog,cloudbau/chef-rsyslog,yagamy4680/rsyslog,bryanwb/rsyslog,joyofhex/rsyslog,gleamicus/rsyslog,slbmeh/rsyslog,strebitz/rsyslog,atomic-penguin/rsyslog,cookbooks/oc-rsyslog,7bfa689ac3c4be50f8ba6c1ea8c5f316/rsyslog,7bfa689ac3c4be50f8ba6c1ea8c5f316/rsyslog,protec-cookbooks/rsyslog,imedo/rsyslog,strebitz/rsyslog,alop/rsyslog,elebertus/rsyslog,rjw1/rsyslog,realloc/cookbook-rsyslog,meetfm/rsyslog,WIU/rsyslog,josephholsten/opscode-cookbooks-rsyslog,groknix/rsyslog,pdf/rsyslog,voroniys/rsyslog,incent-corp/rsyslog,mattray/rsyslog,autoclone/rsyslog,chef-cookbooks/rsyslog,7bfa689ac3c4be50f8ba6c1ea8c5f316/rsyslog,paulmooring/rsyslog,incent-corp/rsyslog,btisdall/rsyslog,autoclone/rsyslog,shopping-adventure/chef_rsyslog,gleamicus/rsyslog,btisdall/rsyslog,meineerde-cookbooks/rsyslog,bkw/rsyslog,pdf/rsyslog,meineerde-cookbooks/rsyslog,shopping-adventure/chef_rsyslog,rackspace-cookbooks/rackspace_rsyslog,ericfeldhusen/rsyslog,meetfm/rsyslog,grigarr/rsyslog,wolfeidau/rsyslog,joyofhex/rsyslog,opscode-cookbooks/rsyslog,phusion/rsyslog,hw-cookbooks/rsyslog,GannettDigital/chef-rsyslog,dennybaa/rsyslog,opscode-cookbooks/rsyslog,opscode-cookbooks/rsyslog,inviland/rsyslog,incent-corp/rsyslog,inviland/rsyslog,joyofhex/rsyslog,miketheman/opscode-rsyslog,yagamy4680/rsyslog,WIU/rsyslog,voroniys/rsyslog