add coveralls

scripts/jenkins-report.sh

 #!/usr/bin/env bash
+
+# This script is used by the edx-platform-unit-coverage jenkins job.
+
 source scripts/jenkins-common.sh
 
 # Get the diff coverage and html reports for unit tests
 paver coverage
 
+# Send the coverage data to coveralls. Setting 'TRAVIS_BRANCH' allows the
+# data to be sorted by branch in the coveralls UI. The branch is passed as
+# a param to the coverage job on jenkins.
+pip install coveralls
+COVERALLS_REPO_TOKEN=$1 TRAVIS_BRANCH=$2 coveralls
+
 # Get coverage reports for bok choy
 # paver bokchoy_coverage