DOC add templates for issues and pull-requests

These templates are inspired by OpenWhisperSystems
fixes #91

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,22 @@
+<!--
+Please feel free to delete any sections that aren't relevant.
+-->
+
+<!-- mark with x between the [ ] -->
+I have:
+- [ ] searched open and closed issues for duplicates
+
+### Bug description
+
+### Steps to reproduce
+- add your steps here
+- as a list
+- using hyphens
+
+### Device info
+<!-- Replace examples with your info -->
+ **Printer:** Manufacturer Model XVI
+
+ **python-escpos version:** 0.0.0
+
+ **operating system:**

.github/PULL_REQUEST_TEMPLATE.md

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+### Contributor checklist
+<!-- mark with x between the brackets -->
+- [ ] I have read the CONTRIBUTING.rst
+- [ ] I have tested my contribution on these devices:
+ * e.g. Epson TM-T88II
+- [ ] My contribution is ready to be merged as is
+
+----------
+
+### Description