Note PLY dependency
Remove newline
Merge pull request #37 from chinasaur/docs/3

Docs/3
fixed small bug with matlab codegen. added userguide tex document
more work on userguide
Indexing bugfix on socp2prob
Merge pull request #38 from chinasaur/socp2prob/1

Indexing bugfix on socp2prob. one-based indexing.