Prototype of calling pyerlTest.py in pyerlTest.erl

Before you can run this erl file successfully, need to install ErlPort
from http://erlport.org/downloads/
Next update will change Arg from string to Json format(including id,
text, weight=null and etc).

3> c(pyerlTest).
{ok,pyerlTest}
4> pyerlTest:pyStart().
{ok,<0.48.0>}
5> pyerlTest:pyCall("rainbow! :)", gothenburg).
gothenburg is Happy
<<"yooo">>
6> pyerlTest:pyCall("rainbow gone :(", gothenburg).
gothenburg is meh.
<<"yooo">>
7> pyerlTest:pyCall("just ate some pancake", gothenburg).
gothenburg is so so
<<"yooo">>