nextstrain installation and environment

README_NextStrain.md

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+# NextStrain Document
+
+## Installation
+
+### Install NextStrain into Conda env
+```
+curl http://data.nextstrain.org/nextstrain.yml --compressed -o nextstrain.yml
+conda env create --name nextstrain-env --file nextstrain.yml
+conda activate nextstrain-env
+npm install --global auspice
+```
+
+### Test the installation
+```
+conda activate nextstrain-env
+# Test things are installed / run analyses
+augur -h
+auspice -h
+nextstrain -h
+conda deactivate nextstrain-env
+```
+
+## NextStrain Analysis
+
+### Entry Point IQTREE Phylogeny
+Follow the [Tuberculosis Tutorial](https://nextstrain.org/docs/tutorials/tb) picking up right after [Get the Topology](https://nextstrain.org/docs/tutorials/tb#get-the-topology).  

nextstrain.yml

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+name: nextstrain
+channels:
+- bioconda
+- defaults
+dependencies:
+- cvxopt
+- datrie
+- fasttree
+- iqtree
+- mafft
+- opencv
+- pandas
+- psutil
+- python=3.6*
+- nodejs=10
+- raxml
+- vcftools
+- git
+- pip
+- pip:
+  - nextstrain-augur
+  - nextstrain-cli
+  - rethinkdb==2.3.0.post6