Add warning about GOPATH to bug_chomper/run_server.sh
Add warning about GOPATH to bug_chomper/run_server.sh

BUG=skia:2551
R=scroggo@google.com

Author: borenet@google.com

Review URL: https://codereview.chromium.org/285763003

git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@14732 2bbb7eff-a529-9590-31e7-b0007b416f81

google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot