Major Compatibility Update

-Now compatible with the new NSE website
-Instead of scraping the data from the html the program now calculates the data from a json file which is also the implementation of the new website (Thanks to @medknecth)
-Since the values on the new website display contracts instead of shares, the values in the program have been updated to display in thousands instead of lacs
-Completely reworked the main code
-Updated Login window
-Dropped support for shares
-Now only supports the following indexes: NIFTY, BANKNIFTY and NIFTYIT
-Refreshes every 1 min now, increased from the earlier 30 sec
-Requires a new module: json
-Instructions about the data is included in README.md
-Object Oriented
-Miscellaneous bug fixes
-Since the new website disallows and is made for preventing web scraping, you may encounter more connection errors