add Badges (#12)

* add badges
* bot configs
* fewer tests
* cache dataset

.github/stale.yml

+# https://github.com/marketplace/stale
+
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 90
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 30
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - pinned
+  - security
+# Label to use when marking an issue as stale
+staleLabel: wontfix
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false

.github/workflows/ci-testing.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04, macOS-10.15, windows-2019]
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.8]  # , 3.7
         requires: ['minimal', 'latest']
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
@@ -67,12 +67,12 @@ jobs:
         pip list
       shell: bash
 
-    #- name: Cache datasets
-    #  uses: actions/cache@v2
-    #  with:
-    #    path: Datasets # This path is specific to Ubuntu
-    #    # Look to see if there is a cache hit for the corresponding requirements file
-    #    key: pl-datasets
+    - name: Cache datasets
+      uses: actions/cache@v2
+      with:
+        path: MNIST  # This path is specific to Ubuntu
+        # Look to see if there is a cache hit for the corresponding requirements file
+        key: pl-datasets
 
     - name: Tests
       run: |

.github/workflows/greetings.yml

+name: Greetings
+# https://github.com/marketplace/actions/first-interaction
+
+on: [issues]  # pull_request
+
+jobs:
+  greeting:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/first-interaction@v1
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        issue-message: 'Hi! thanks for your contribution!, great first issue!'
+        pr-message: 'Hey thanks for the input! Please give us a bit of time to review it!'

README.md

@@ -25,7 +25,9 @@ ARXIV
 [![Paper](http://img.shields.io/badge/arxiv-math.co:1480.1111-B31B1B.svg)](https://www.nature.com/articles/nature14539)
 -->
 
-
+[![CI testing](https://github.com/PyTorchLightning/pytorch-lightning-conference-seed/workflows/CI%20testing/badge.svg)](https://github.com/PyTorchLightning/pytorch-lightning-conference-seed/actions?query=workflow%3A%22CI+testing%22)
+![Check Code formatting](https://github.com/PyTorchLightning/pytorch-lightning-conference-seed/workflows/Check%20Code%20formatting/badge.svg)
+[![codecov](https://codecov.io/gh/PyTorchLightning/pytorch-lightning-conference-seed/branch/master/graph/badge.svg)](https://codecov.io/gh/PyTorchLightning/pytorch-lightning-conference-seed)
 
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