added example files

example-umbrella

@@ -0,0 +1,2 @@
coverage run python_test.py &> /dev/null
python umbrella.py &> /dev/null

example-umbrella.py

@@ -0,0 +1,18 @@
#!/usr/bin/python
import coverage
output = ""
cov = coverage.coverage()
cov.load()
for a in [cov.analysis2("*")]:
    output += "{0};{1};{2};{3}\n".format(
            a[0], 
            ",".join(str(x) for x in a[1]), 
            "", 
            ",".join(str(x) for x in a[3]))
f = open(".umbrella-coverage", "w")
f.write(output)
f.close()