modified the circle.yml for hosts and add a bash file for creating extra tables
modified the dependency for setting up datalanche package
modified the dependency pre step for step.py
modified query.py so as to take dict type to drop columns, modified auto_exam to test examples
return 1 for create_table.py and alter_table if error
created bash for local test
add bash for local testing
add test_example folder for testing examples locally, finished up the local testing script
finish up auto_exams bash for testing production
add database param for testing show tables examples
remove create_table script for testing select_search.py
remove localhost testing examples
removed local_test scripts
add scripts for testing index examples
modified circle.yml to run auto_exam script which is moved to a new folder called test
correct the typo in drop_index.py file to drop the index
move auto_exam create_table_sample bash script into new folder test
modified config_production to add comments for test developers' use, remove the config_localhost config file
remove the bash script for check config.json file
removed the config folder and just left the config.json alone