Merge pull request #3 from zonca/master

Test cloud-kepler run on Gordon
- Fixed so that bls_pulse handles multiple Kepler targets from stream again.
- Added a bit of beautification to terminal output to help separate Kepler targets, especially when more than one is done at a time.
- Fixed typo in a comment in download.py.
tweaked bls pulse slightly and added options and noise generation to signal.py