januarharianto/respR: Final v1 Release

This is the final release of v1 of respR.

There is only one change, the addition of function called installation_help. This function simply opens its own help file. It contains resources which may be helpful in running v.1.1 code in the future, such as a list of dependencies and the latest versions known to work with v1.1.1, and how to install them. This is intended for users who have recently submitted v1.1 code as part of a publication, and investigators who may wish to reproduce their analyses in the future.

The reason this may be necessary is because version 2.0 of respR will be released shortly and contains several code-breaking changes which means code written using v1.x will fail to run or return the same results. Using the information in this file an investigator should be able to install respR v1.1.1 and its dependencies and reproduce these analyses.