Merge pull request #21 from grimley517/master

Added Graph Section
Add repo description
add Rosetta Code as source
Also reflect changes in Solutions readme
Update emphasis
More pythonic way of creating dict
Web scraper done
Solution to web scraper
Product class added.
Inventory class added.
Add solution to product inventory
Update quantity method added
More idiomatic code, use defaultdict
Safer way of user input
Use eval() for calc
Add classic algorithms
Add donation link
Collatz Conjecture done
Link to Collatz Conjecture
Rss feed creator done