Consolidate build into .travis.yml and tweak to fix coveralls

.travis.yml

@@ -8,28 +8,16 @@ install:
     - sudo apt-get update -y
 
     # install aptitude packages
-    - LDFLAGS=-lm sudo apt-get install -y $(< requirements-travis.txt)
+    - LDFLAGS=-lm sudo apt-get install -y libevent-dev
 
-    # install python requirements
-    - make setup
-    - pip install coveralls
-
-    # weird travis-ci python paths
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/pymodules/python2.7/
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/python2.7/dist-packages
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/pyshared/python2.7/
-    - export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages/
+    # install pyvows
+    - pip install --upgrade --editable .[tests]
 
-    # verify requirements were met
-    - INSTALLDIR=$(python -c "import os; import gevent; print(os.path.dirname(gevent.__file__))")
+    # install coveralls
+    - pip install coveralls
 
 
 script:
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/pymodules/python2.7/
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/python2.7/dist-packages
-    - export PYTHONPATH=$PYTHONPATH:/usr/lib/pyshared/python2.7/
-    - export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages/
-
     # finally run tests
     - env PYTHONPATH=. coverage run --source=pyvows  ./pyvows/__main__.py