updating travis and tox configs

.travis.yml

@@ -1,8 +1,9 @@
 language: python
 install:
-  - "pip install ."
-  - "pip install tox"
+  - pip install tox
 script:
   - tox
 env:
+  - TOXENV=py26
   - TOXENV=py27
+  - TOXENV=coverage

tox.ini

@@ -1,15 +1,36 @@
 [tox]
-envlist = py27
+envlist=
+    dev, coveralls, py26, py27
 
 [testenv]
 deps=
     unittest2
+
+[testenv:dev]
+basepython=python
+deps=
+    {[testenv]deps}
+    coverage
+commands=
+    coverage erase
+    coverage run --rcfile=./.coveragerc -m unittest2 discover tests []
+    coverage html --rcfile=./.coveragerc
+
+[testenv:coveralls]
+basepython=python2.7
+deps=
+    {[testenv]deps}
     coverage
     coveralls
-
-[testenv:py27]
 commands=
     coverage erase
     coverage run --rcfile=./.coveragerc -m unittest2 discover tests []
     coveralls
-    coverage erase
+
+[testenv:py26]
+commands=
+    unit2 discover tests []
+
+[testenv:py27]
+commands=
+    unit2 discover tests []