yum install rrdtool rrdtool-devel
Merge pull request #3 from sonots/readme

Update README.md
fix Procfile name
Merge pull request #4 from sonots/fix_Procfile

fix Procfile name
Fix color update

When updating a graph via /api/:service_name/:section_name/:graph_name
without params[:color], req_params[:color] isn't nil but empty string.
Create datadir before `rake init`
Create datadir by FileUtils.mkdir_p
Merge pull request #7 from eagletmt/mkdir_p

Prepare datadir by mkdir_p
Merge pull request #6 from eagletmt/fix-color-update

Fix color update
Fix hash key
Merge pull request #9 from u-ichi/fix_hash_key

Fix hash key
rename variable name overwriting Kernel#p
fix graph_id typo
Merge pull request #10 from u-ichi/error_complex_graph

fix graph_id typo
fix get graph
fix delete api
fix edit graph
Merge pull request #11 from sonots/fix_delete_api

fix delete api
Merge pull request #12 from sonots/fix_edit_graph

fix edit graph
Merge pull request #13 from sonots/fix_get_graph

fix get graph