submit some minor fix to gl_ec2, moved HPC stuff to comment since we may want to support it in the future
removing hdfs from als_demo
improving ec2_gl script for allowing public benchamrking of graphlab
removed ununsed tracepoint which prevents compilation when using USE_TRACEPOINT
updated als documentation to include minval and maxval command line flags - which improve validation RMSE
Merge pull request #80 from dbickson/master

Working on open source benchmarking for ec2