Update datapoint and datastream ref doc
Add style to main content
Modified style, mainly for color
Indent content list
Add auth and overview of refs
Change color theme
Add link to header, fix bug
Add guides
Merge pull request #9 from wendycan/master

Add style to main content
Merge branch 'master' of github.com:dotide/developer.dotide.com
Fix build bug and add new imgopt tools