add a github issue template (#250)

Author: KazuCocoa

.github/issue_template.md

@@ -0,0 +1,24 @@
+## The problem
+
+Briefly describe the issue you are experiencing (or the feature you want to see added to Appium). Tell us what you were trying to do and what happened instead. Remember, this is _not_ a place to ask questions. For that, go to http://discuss.appium.io!
+
+
+## Environment
+- Appium version (or git revision) that exhibits the issue:
+- Last Appium version that did not exhibit the issue (if applicable):
+- Desktop OS/version used to run Appium:
+- Node.js version (unless using Appium.app|exe):
+- Mobile platform/version under test:
+- Real device or emulator/simulator:
+- Appium CLI or Appium.app|exe:
+
+## Details
+
+If necessary, describe the problem you have been experiencing in more detail.
+
+## Link to Appium Logs
+
+Create a [GIST](https://gist.github.com) which is a paste of your _full_ Appium logs, and link them here.
+
+## Code To reproduce issue
+