Standardize ISSUE_TEMPLATE.md

Author: Jeff Brateman

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,9 @@
+### General information
+
+* SDK/Library version: <!-- Example: 4.7.2 -->
+* iOS Version and Device: <!-- Example: iOS 9.3 on an iPhone 6s -->
+* Integration type and version: <!-- Example: CocoaPods 1.1.1, Carthage 0.18.1 -->
+
+### Issue description
+
+<!-- To help us quickly reproduce your issue, include as many details as possible, such as logs, steps to reproduce, and so on.  If the issue reports a new feature, follow the [user story](https://en.wikipedia.org/wiki/User_story) format to clearly describe the use case. -->