generating xml reports

.gitignore

@@ -6,6 +6,7 @@
 .coverage
 .tox/
 bin/
+coverage-*
 include/
 lib/
 src/icalendar.egg-info/

tox.ini

@@ -9,3 +9,4 @@ commands =
     coverage erase
     coverage run --source=icalendar --omit=*tests* {envbindir}/unit2 discover icalendar []
     coverage report --omit=*tests*
+    coverage xml --omit=*tests* -o {toxinidir}/coverage-{envname}.xml