v1.0.3

• Add some basic specs, foodcritic, knife test and enable TravisCI
• Fix error with undefined grafana_user variable Thanks to @klamontagne
• Fix timezone value quoting in config.js (Anatoliy D.) #9
• Update grafana to 1.5.2 (Grégoire Seux) #7
• Don't set normal attribute node['nginx']['default_site_enabled'] (Grégoire Seux) #5
• Remove "use strict"; from config.js as it seems to not be present in
  grafana releases, thanks to @iiro for proposing it in #1
• Don't search when node['grafana']['es_server'] or node['grafana']['graphite_server']
  is set and don't use normal attributes (Grégoire Seux) #3
• Refactor and separate install in two recipes: install_git and install_file
  (Grégoire Seux) #2