ICU-20003 add a PR template (#27)

* ICU-20003: add a PR template
Create a GItHub PR template

diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644 (file)
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+++ b/.github/pull_request_template.md
@@ -0,0 +1,18 @@
+<!--
+Thank you for your pull request.
+Please see http://site.icu-project.org/processes/contribute for general
+information on contributing to ICU.
+
+You will be automatically asked to sign the contributors license before the PR is accepted.
+- sign: https://cla-assistant.io/unicode-org/icu
+- license: http://www.unicode.org/copyright.html#License
+-->
+
+##### Checklist
+
+- [ ] Issue filed at https://unicode-org.atlassian.net :  ICU-______
+- [ ] Update PR title to include Issue number
+- [ ] Issue accepted
+- [ ] Tests included
+- [ ] Documentation is changed or added
+