Create SkipList2.java

*NOTE: Before you compile and run with other files, change file name from SkipList2.java to SkipList.java

Changed delete(Type key) 
- now it decrements the size of the skiplist (not the height).

Changed searched(Type key)
- now it ignores uppercase/lowercase when comparing strings
Merge pull request #1 from choysama/patch-1

Create SkipList2.java