added sitecores ItemUtil.ProposeValidItemName to get valid item names
Revert "added sitecores ItemUtil.ProposeValidItemName to get valid item names"

This reverts commit 22d47f36dd2f40cf28108e5e44159692cc50409d.
*modified GetNewItemName to use sitecores ProposeValidItemName for better item naming
Merge pull request #4 from mawiseman/master

Improved GetNewItemName using ItemUtil.ProposeValidItemName