Change over from wiggle files to bedgraph files to profile reads. Reasons are

Change over from wiggle files to bedgraph files to profile reads. Reasons are
1) Wiggle files at some point exceed the amount of data that ucsc will accept
2) Bedgraph is more accurate, I think
3) Also, used this as an opportunity to put strand direction on profiles, so now two tracks
   are made, one for forward strand reads, one for reverse strand reads.