Fix: change function name from glimpse to crop. function name changed for easier understanding. added docstring to crop function.
Fix: change function name from glimpse to crop.
function name changed for easier understanding.
added docstring to crop function.

Signed-off-by: Harish Anand <d34e244e1574352894d7dee05fc99b349be5e420@gmail.com>

harishanand95/jsrt-parser