add issue bot (#799)

Author: Sneezry

.github/stale.yml

@@ -0,0 +1,23 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 30
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 0
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - "help wanted"
+  - bug
+# Label to use when marking an issue as stale
+staleLabel: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale and closed because it 
+  has not had recent activity. Please feel free to open a new issue if you
+  would like further discussion. Thank you for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false
+# Set to true to ignore issues in a milestone (defaults to false)
+exemptMilestones: true
+# Set to true to ignore issues with an assignee (defaults to false)
+exemptAssignees: true
+# Limit to only `issues` or `pulls`
+only: issues

.vscodeignore

@@ -10,4 +10,5 @@ tsconfig.json
 tslint.json
 .travis.yml
 gulpfile.js
-*.vsix
+*.vsix
+.github/**