removed returned figured for peek
pep8 fixes
pep8 fixes to logical lightcurve
added plot command to logical lc
updated doc string, made example more interesting and added alpha value to plot
added plot() to RHESSI lightcurve
removed return of figure to peek in mapbase
pep8 fixes to compositemap
removed unused gamma, pep8 fixes, and removed return of figure to peek()
pep8 fixes
fix to TODO and pep8
removed peek() from goes lc