Stop using deprecated __conda_version__.txt file.

Use jinja template function to get version string from setup.py.

Author: pavoljuhas

conda-recipe/build.sh

@@ -4,7 +4,5 @@ $PYTHON setup.py install
 
 # Add more build steps here, if they are necessary.
 
-$PYTHON setup.py --version > __conda_version__.txt
-
 # See http://docs.continuum.io/conda/build.html
 # for a list of environment variables that are set during the build process.

conda-recipe/meta.yaml

@@ -1,6 +1,8 @@
+{% set setupdata = load_setup_py_data() %}
+
 package:
   name: diffpy.pdfgui
-  ## Use __conda_version__.txt.
+  version: {{ setupdata['version'] }}
 
 source:
   # git_url: https://github.com/diffpy/diffpy.pdfgui.git