move install step to the install section (references #4)

appveyor.yml

@@ -26,6 +26,7 @@ install:
   - "python -m pip install coverage"
   - "python -m pip install nose"
   - "python -m pip install git+https://github.com/PyUtilib/pyutilib"
+  - "python setup.py develop"
   - "dir %PYTHON%\\Scripts"
 
 build: off
@@ -38,8 +39,7 @@ test_script:
   # Note that you must use the environment variable %PYTHON% to refer to
   # the interpreter you're using - Appveyor does not do anything special
   # to put the Python evrsion you want to use on PATH.
-  - "%PYTHON%\\python.exe setup.py develop"
-  - "%PYTHON%\\Scripts\\test.pyomo.exe --cat=nightly --cov -v"
+  - "test.pyomo --cat=nightly --cov -v"
 
 #after_test:
   # This step builds your wheels.