Merge pull request #26 from jGaboardi/dual_tests

addressing pysal/pysal#1145

Author: jGaboardi

.travis.yml

@@ -37,8 +37,10 @@ install:
         echo 'testing pypi libpysal spreg' && pip install libpysal spreg;
     else
         echo 'testing git libpysal spreg';
-        pip install https://github.com/pysal/libpysal/archive/master.zip;
-        pip install https://github.com/pysal/spreg/archive/master.zip;
+        git clone https://github.com/pysal/libpysal.git;
+        cd libpysal; pip install .; cd ../;
+        git clone https://github.com/pysal/spreg.git;
+        cd spreg; pip install .; cd ../;
     fi;