em directory with tests, faded, them and travis update

tests/em/examples/__init__.py

@@ -0,0 +1,11 @@
+if __name__ == '__main__':
+    import os
+    import glob
+    import unittest
+    test_file_strings = glob.glob('test_*.py')
+    module_strings = [str[0:len(str)-3] for str in test_file_strings]
+    suites = [unittest.defaultTestLoader.loadTestsFromName(str) for str
+              in module_strings]
+    testSuite = unittest.TestSuite(suites)
+
+    unittest.TextTestRunner(verbosity=2).run(testSuite)

tests/em/examples/test_Examples.py

@@ -0,0 +1,10 @@
+import unittest, os
+from SimPEG.EM import Examples
+
+class EM_ExamplesRunning(unittest.TestCase):
+
+    def test_CylInversion(self):
+        Examples.CylInversion.run(plotIt=False)
+
+if __name__ == '__main__':
+    unittest.main()