Adds accurate environment.yml

environment.yml

 name: plio
 channels:
   - conda-forge
+  - usgs-astrogeology
 dependencies:
-  - pip:
-    - pvl
-    - protobuf==3.0.0b2
-  - gdal>2.x
+  - libgdal
+  - gdal
+  - numpy 
+  - pyproj 
   - h5py 
+  - pvl 
+  - scipy 
+  - protobuf 
+  - affine 
+  - jinja2 
+  - networkx 
   - pandas 
   - sqlalchemy 
   - pyyaml 
-  - networkx 
+  - ncurses 
+  - pytest 
+  - pytest-cov
\ No newline at end of file