The salesforcer backwards compatible version of RForcecom::rforcecom.login

rforcecom.login(
  username,
  password,
  loginURL = "https://login.salesforce.com/",
  apiVersion = "35.0"
)

Arguments

username: Your username for login to the Salesforce.com. In many cases, username is your E-mail address.
password: Your password for login to the Salesforce.com. Note: DO NOT FORGET your Security Token. (Ex.) If your password is "Pass1234" and your security token is "XYZXYZXYZXYZ", you should set "Pass1234XYZXYZXYZXYZ".
loginURL: (optional) Login URL. If your environment is sandbox specify (ex:) "https://test.salesforce.com".
apiVersion: (optional) Version of the REST API and SOAP API that you want to use. (ex:) "35.0" Supported versions from v20.0 and up.