Bug fixes and added features.

wordSwarm.py:: Added documentation for command line arguments. Tried to fix memory leak with re-creating fixtures, but to no avail. Created new command line argument for displaying only the topN entries in the CSV file. Added ability to specify color or hues for specific words from the CSV file. Made date progress bar look nicer. Added WordSwarm logo.

wsColorer.py, wsNGrams.py:: Added ability to specify color or hues for specific words from the CSV file.

readme.md:: Replaced example with AAS Science data set

Processor.py:: Can now handle dates pre-1900

Processor_names.py:: New scraper and processor for creating a baby names WordSwarm

Scraper_Science.py:: New scraper for AAAS Science magazine

.gitignore:: Ignores all datasets in /1-Preprocessing/

wordSwarm_*.png:: Added WordSwarm logos