Update README.md

Author: jpa99

DP/README.md

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 # Dynamic Programming Algorithms
+
+* [0-1 Knapsack](https://github.com/jpa99/Algorithms/blob/master/DP/Knapsack.java)
+* [Edit (Levenshtein) Distance](https://github.com/jpa99/Algorithms/blob/master/DP/Edit_Distance.java)
+* Longest Increasing Subsequence
+* [Longest Common Subsequence](https://github.com/jpa99/Algorithms/blob/master/DP/LCS.java)
+* [Maximum Nonadjacent Subset Sum](https://github.com/jpa99/Algorithms/blob/master/DP/maxDonations.java)
+* Maximum Subset Sum