CLN: On first run of FFTW, print info statement instead of ugly warning. Also fix typo.
Merge pull request #115 from danielballan/fftw-message

CLN: Change info on first run of FFTW.
FIX: Fix typo introducing in #112 mpl cleanup.
Merge pull request #117 from danielballan/fix-mpl-typo

FIX: Fix typo introducing in #112 mpl cleanup.
added the ability to annotate features in two different colors based on a threshold set in a desired category

Conflicts:
	trackpy/plots.py
removed white spaces

Conflicts:
	trackpy/plots.py
finished implementing the ability to section particles into different colors in annotate plot
cleanups