add string_to_int
Merge pull request #165 from femoraes/master

add string_to_int
Added Bresenham-based supercover line in Lua
binary search tree and some operations using linked list
Added Hamming Weight in Lua
Merge pull request #166 from Yonaba/master

Added Bresenham-based supercover line in Lua
Merge pull request #167 from swapkh91/master

binary search tree and some operations using linked list
Added license. Fixed #164
Merge pull request #168 from jcla1/license

Added license. Fixed #164