Fixed minor changes, that resulted in code crash during runtime #185
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Faced the following errors, while running the files. After making these minor changes, the code runs smoothly
Removed all instances of plt.hold(true) since the same has been deprecated.
Source : https://stackoverflow.com/questions/53689386/python-3-pyplot-hold-is-deprecated
cv2.find_contours() : return type expected values are 3, or 2 depending on the version of cv2 installed. Changed code to handle all versions.
Source : ValueError: not enough values to unpack (expected 3, got 2) facebookresearch/maskrcnn-benchmark#339