Update python modules installation.

docs/Software_installation.md

@@ -114,31 +114,22 @@ mv /home/u035/project/software/install/1000G_phase3_hg38/1000g.phase3.100k.b38*
 
 ## Python modules
 
-Users should include this line in any shell scripts requiring these modules, and ensure this command is run prior to installing any Python modules in this location.
-
-```
-export PYTHONPATH=/home/u035/project/software/lib/python3.6/site-packages
-```
-
 ### VASE
 
-VASE was installed following the instructions at https://github.com/david-a-parry/vase, downloaded 27 August 2020.
+VASE v0.4 was installed 28 August 2020.
 
 ```
-cd /home/u035/project/software/install
-git clone https://github.com/david-a-parry/vase.git
-cd vase
-/home/u035/project/software/bcbio/anaconda/bin/python3 setup.py install --prefix /home/u035/project/software
+cd /home/u035/project/software
+./bcbio/anaconda/bin/pip3 install git+git://github.com/david-a-parry/vase.git#egg=project[BGZIP,REPORTER,MYGENE]
 ```
 
 ### XlsxWriter
 
+XlsxWriter 1.3.3 was installed 28 August 2020.
+
 ```
-cd /home/u035/project/software/install
-git clone https://github.com/jmcnamara/XlsxWriter.git
-cd XlsxWriter
-/home/u035/project/software/bcbio/anaconda/bin/python3 setup.py install --prefix /home/u035/project/software
-rsync -av xlsxwriter ../../lib/python3.6/site-packages
+cd /home/u035/project/software
+./bcbio/anaconda/bin/pip3 install XlsxWriter
 ```
 
 ## GATK 3.8