Added readme

Author: aloner-pro

BSE_data/README.md

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+# BSE DATA
+We can access `BOMBAY STOCK EXCHANGE` data through a package known as `bsedata`. Which can be found [here.](https://github.com/sdabhi23/bsedata)
+## How to use 
+Make sure that you have `bsedata` package installed for this.
+If not you can do it by
+```
+pip install bsedata
+```
+
+Then just run the script.
+### WARNING
+> Refrain from using this library if you are trying to query  the stock exchange very very frequently. It increases load on BSE’s servers and might even lead to your IP address being blacklisted by them. Apart from the technical issues, it’s higly unethical.
+ For frequent queries, consider buying data from BSE or a vendor. More details are available at https://www.bseindia.com/market_data_products.html