updated installations instructions

12 jobs for docs in 16 minutes and 30 seconds (queued for 193 minutes and 27 seconds)
Status Job ID Name Coverage
  Build
passed #70617
conda-linux
build_linux_27

00:02:06

passed #70619
conda-linux
build_linux_35

00:02:41

passed #70621
conda-linux
build_linux_36

00:02:57

passed #70622
conda-macosx
build_macosx_27

00:02:38

passed #70620
conda-macosx
build_macosx_35

00:02:47

passed #70618
conda-macosx
build_macosx_36

00:03:23

 
  Test
passed #70627
conda-linux
test_linux_27

00:01:40

passed #70625
conda-linux
test_linux_35

00:01:36

passed #70623
conda-linux
test_linux_36

00:03:16

passed #70624
conda-macosx
test_macosx_27

00:03:25

passed #70626
conda-macosx
test_macosx_35

00:03:25

passed #70628
conda-macosx
test_macosx_36

00:03:25