remove test
initial binary search algorithm
minor changes
mininal best
add the most neat code
Reorgnize topic one - binary search.
Merge branch 'master' of https://github.com/yelu/leetcode

Conflicts:
	Binary-Search-Best-Practice.py
correct some errors
change some english expression errors
fix en grammar
fix en
fix en
delete duplicate code lines
Update Topic1_BinarySearch.md
Update Topic1_BinarySearch.md
Update Topic1_BinarySearch.md
Update Topic1_BinarySearch.md
Update Topic1_BinarySearch.md
modify the topic 1
add binary tree upside down algorith