Fixing the python requirements (min 3.6) in documentation.

And in travis CI build.

Author: piotrszul

.travis.yml

@@ -15,7 +15,7 @@ branches:
   - /^v\d+\..*$/
 # command to install dependencies
 install:
-  - source ~/virtualenv/python2.7/bin/activate
+  - source ~/virtualenv/python3.6/bin/activate
   - python --version
   - dev/py-setup.sh
 script:

README.md

@@ -39,7 +39,7 @@ In order to build the binaries use:
 
     mvn clean install
 
-For python _variant-spark_ requires python 2.7 with pip.
+For python _variant-spark_ requires python 3.6+ with pip.
 The other packages required for development are listed in `dev/dev-requirements.txt` and can be installed with:
 
     pip install -r dev/dev-requirements.txt

python/README.md

@@ -6,8 +6,8 @@ VariantSpark is built on top of Apache Spark core. It implements a supervised, w
 ### 1. Install VariantSpark
 
 Prerequisites: 
-- Python 2.7 with pip (current version of VariantSpark is not compatible with Python 3)
-- PySpark installed in the system either as a python package or from the distribution package. VariantSpark has been tested with Spark 2.1.x
+- Python 3.6+ with pip 
+- PySpark installed in the system either as a python package or from the distribution package. VariantSpark has been tested with Spark 2.4.x
 
 Installation:
 

python/docs/development.rst

@@ -16,7 +16,7 @@ In order to build the binaries use:
     mvn clean install
 
 
-For python **variant-spark** requires python 2.7 with pip. 
+For python **variant-spark** requires python 3.6+ with pip.
 
 The other packages required for development are listed in dev/dev-requirements.txt and can be installed with: