BLD: Remove nose from instructions

Remove nose and replace with pytest

Author: bashtage

appveyor.yml

@@ -21,7 +21,7 @@ build_script:
   - cmd: SET PATH=C:\Py;C:\Py\Scripts;C:\Py\Library\bin;%PATH%
   - cmd: conda config --set always_yes yes
   - cmd: conda update conda --quiet
-  - cmd: conda install numpy cython pytest pandas scipy patsy statsmodels matplotlib numba nbconvert nbformat nose pip pyyaml setuptools pyqt pyparsing --quiet
+  - cmd: conda install numpy cython pytest pandas scipy patsy statsmodels matplotlib numba nbconvert nbformat pip pyyaml setuptools pyqt pyparsing --quiet
   - cmd: python setup.py install
 
 test_script:

building/binstar/meta.yaml

@@ -39,7 +39,7 @@ test:
   imports:
     - arch
   requires:
-    - nose
+    - pytest
 
 about:
   home: https://github.com/bashtage/arch