Add issue template

.github/ISSUE_TEMPLATE/issue-template.md

+---
+name: ISSUE TEMPLATE
+about: Bug and Feature Report
+
+---
+
+Before you open an issue, please make sure you have tried the following steps:
+
+1. Make sure your ENV is the same with (https://mace.readthedocs.io/en/latest/installation/env_requirement.html).
+2. Have you ever read the document for your usage?
+3. The form below must be filled.
+
+------------------------
+
+### System information
+- **OS Platform and Distribution (e.g., Linux Ubuntu 16.04)**:
+- **NDK version(e.g. 15c)**:
+- **MACE version (Use the command: git describe --long --tags)**:
+- **Python version(2.7)**: 
+- **Bazel version (e.g. 0.13.0)**:
+
+### Model deploy file (*.yml)
+```yaml
+......
+```
+
+### Describe the problem
+A clear and concise description of what the bug is.
+
+### To Reproduce
+Steps to reproduce the behavior:
+```bash
+1. cd /path/to/mace
+2. python tools/converter.py convert --config_file=/path/to/your/model_deployment_file
+```
+
+### Error information / logs
+```bash
+LOGs
+```
+
+### Additional context
+Add any other context about the problem here.