Clean up api and switch to superaggent
add test case
Complete test for node module
Adding relationship test case
Complete relationship testing
Combine readNodeRelationship and readTypedRelationship
Adding label test
Add traversal test
Add constraint test
Add constraint checking
Adding index test
Complete index test case
Complete algorithm test
Fixing test case
Adding Cypher test
Complete test
Update document
Add objToStr utils
Complete cypher test
Updating test case document