Migrate the "number to string" node, so that 3 test case can pass.
Merge branch 'ChocoButter-2Become1' of https://github.com/DynamoDS/Dynamo into ChocoButter-2Become1
Merge branch 'ChocoButter-2Become1' of https://github.com/DynamoDS/Dynamo into ChocoButter-2Become1
fix a typoo error in the test case
Merge pull request #1184 from Zhengzi/ChocoButter-2Become1

Migrate the "number to string" node, so that 3 test case can pass.