Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,11 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Which OS are you using?**
+ - OS: [e.g. iOS or Windows.. If you are using Google Colab, just Colab.]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,11 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the feature you'd like**
+A clear and concise description of what you want to happen.