Anaconda no longer free for organizations > 200 employees

[bstabler]

As @jpn-- points out in #455, Anaconda is no longer free for organizations > 200 employees. See the Anaconda Commercial Edition FAQ. We're in the process of updating our documentation to use the free miniforge as well.

[bstabler]

the documentation has been updated

[bstabler]

@jpn-- to update Getting Started page so it suggests miniforge as opposed to Anaconda. @bstabler to test workflow as well.

[bstabler]

I tested this on my Windows machine and it worked fine. The steps are:

0. Remove all existing Anaconda installs to avoid conflicts
1. Download the miniforge installer for Windows
2. Install it, but make sure to select 'add miniforge3 to the system PATH environment variable' so typing 'conda' on the command line will work
3. Open a command prompt and type 'conda' to run the program

@jpn-- please go ahead with the PR to update the documentation (and maybe the notebooks or other getting started resources). Thanks.

[bstabler]

We agreed on the 10/7 call that I would update the documentation.