autogenerate api server interface for genScript

[cloudinertia]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Performance issue
[ v ] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

only supports server-side/client-side execution scripts.

Expected behavior

also supports http api endpoint interface.

e.g.

GET
//Transfer?to=...&value=100

or

POST
//Transfer
body
to:xxx
value:200