Added .coveragerc for coveralls

Author: Nina.Hakansson

.coveragerc

@@ -0,0 +1,14 @@
+[run]
+branch = True
+source = level1c4pps
+relative_files = True
+
+[report]
+exclude_lines =
+    if self.debug:
+    pragma: no cover
+    raise NotImplementedError
+    if __name__ == .__main__.:
+ignore_errors = True
+omit =
+    tests/*