suggestion:issue template

[yeshengwu]

please refer react native issue template: facebook/react-native#19799 we can make a new issue template like this:
have you search the existing issue list?
have you use the latest DroidPlugin release?

1,Environment: os version. DroidPlugin version
2, Description
3,reproduce step.
.......

if we describe the issue much detail we can get more info to fix problem.