Error Checking 4
Error Checking 4

Complete:
error checking for
when you open the image ( handled IO exception ) 
when you open the CSV file ( handled IO exception ) 
when reading the CSV file, it now only reads one line [ because we expect the file to be one line ] and attempts to cast the first CSV as an int since we expect it to be number of already processed images ( handled ValueError exception )
don't allow cropping outside of image boundaries (avoids black bars around the image)  
don't allow resizing of an image too small (min 1000 x something proportional pixels) 
separate images into pre-processing and post-processing folders
update CSV at end of image processing so we don't overwrite already processed images/ process the same images multiple times (basically done, figured out my bugs, gunna finish this and the last bit of this and then double check all my error checking tomorrow morning ( before noon))
function to auto update csv with new images
TO DO:
Stopsign stuff
qdm8t2/capstone-autonomous-car