11. Edit Distance

Similar with 4. LCS
Fixed travis build error
Add DP List
minor adjust
Add Boost Graph
Advanced data structures comments

Fibonacci Heaps, van Emde Boas trees and disjoint sets
Add graph module
Add BFS, DFS, topologically sorting
Add strongly connected components (SCC)
Add Kruskal MST
Add Pattern Searching Module
Add KMP
Add loki library

loki refer to: http://loki-lib.sourceforge.net/
a patch of SmallObj.cpp refer to:
https://sourceforge.net/p/loki-lib/patches/25/
revert then patch
LeetCode Starting

http://leetcode.com/onlinejudge
Word Ladder of LeetCode
Add loki sample and fixed Word Ladder
try to fix error on travis
[115, 125] of leetcode
[100, 115] of leetcode