Convenience function to pull a single table

Usage

getTable(
  database_host,
  database_name,
  database_user,
  database_password,
  tablename
)

database_host: if connecting to a database hosted on AWS, it might be something like ec2-54-83-201-96.compute-1.amazonaws.com
database_name: name of the database, eg for cryptococcus kn99, the database might be named kn99_database. Check with the documentation, whoever set up the database, or get into the server and check directly
database_user: a user of the actual database, with some level of permissions. You'll need to check with the database maintainer for this. It is suggested that you use a .Renviron file in your local project (make sure it is completely ignored by git, R, etc) to store this info
database_password: password to the database user. You'll need to check with the database maintainer for this. It is suggested that you use a .Renviron file in your local project (make sure it is completely ignored by git, R, etc) to store this info
tablename: name of the table you wish to pull. Must have correct capitalization. I have attempted to make the camelCase consistent, eg bioSample, rnaSample

a single table as a dataframe