Add issue template [skip ci]

skvark · web-flow · commit 83b0ac8a2001 · 2017-09-12T19:45:04.000+03:00
diff --git a/.github/issue_template.md b/.github/issue_template.md
@@ -0,0 +1,15 @@
+### Expected behaviour
+
+Write here how did you expect the library to function.
+
+### Actual behaviour
+
+Write here what went wrong.
+
+### Steps to reproduce
+
+- example code
+- operating system
+- architecture (e.g. x86)
+- opencv-python version
+
