add answer for question1-04

add a solution for Q1_02

Merge pull request #8 from davidcpell/improve-q1_01

Merge pull request #5 from levsero/fix-q1_02

improve Q1_01 efficiency and Ruby idiom

Merge pull request #6 from levsero/improve-q1_06_string_compression

fix and update q1_06 string compression

fix and update q1_02

updated Readme

Merge pull request #4 from brokenfingers/fix/array-and-strings-1.5

handle case when more than 1 edit away containing same characters

Merge pull request #3 from careercup/ArrayStrings

Updated paths on RSpec

Merge pull request #2 from careercup/ArrayStrings

Updated Solution2 Check Permutation Should run O(n)