Added gevent tests and dependancy for python2.

Author: xordoquy

.travis.yml

@@ -16,6 +16,7 @@ install:
   - sudo apt-get install libevent-dev
   - pip install $DJANGO --use-mirrors
   - make bootstrap
+  - "if [[ ${TRAVIS_PYTHON_VERSION::1} != '3' ]]; then pip install gevent --use-mirrors; fi"
 script:
   - make lint
   - py.test tests/ --cov raven --cov-report term-missing

conftest.py

@@ -9,6 +9,11 @@
     if sys.version_info[1] == 3:
         collect_ignore.append("tests/handlers/logbook")
 
+try:
+    import gevent
+except ImportError:
+    collect_ignore.append("tests/transport/gevent")
+
 
 INSTALLED_APPS = [
     'django.contrib.auth',