added 2 command-line parameters:

    --http-timeout
    --poll-interval

These default to the previously hard-coded values and can now be
overriden on the command line
I thought it should be documented somewhere, wasn't sure the best place.  Without it, these are hidden parameters.  I can remove it from the Readme.

When I attempted to run this out on a cluster, it wouldn't load anything due to the API taking more than 2 seconds to return.  I manually changed the timeout value (8) and recompiled and it worked.  

I also wanted to tweak the refresh interval, as admins for a client will probably complain about the load [don't ask].  So, I figured while I was in there, I'll add another parameter to the command-line.

This is a great tool, you saved me from writing my own.