Move release checklist across from wiki

etc/ReleaseCheckList.md

@@ -0,0 +1,17 @@
+Template checklist for releases.  
+
+Copy and paste the markdown into an issue or project per release
+
+- [ ] Bump versions across all files
+- [ ] Blog post
+- [ ] Update versions.txt file
+- [ ] Update news on github.io site
+- [ ] Post exe versions to downloads site
+- [ ] Update link in Downloads wiki page
+- [ ] Update SpatialConditions wiki
+- [ ] Update Indices wiki
+- [ ] Update ReleaseNotes wiki
+- [ ] Update Task:: files on CPAN
+- [ ] Tag release
+- [ ] Flag tag as release: https://github.com/shawnlaffan/biodiverse/releases
+- [ ] Announce to various lists