added README, gitignore

.gitignore

@@ -0,0 +1,24 @@
+# SPDX-FileCopyrightText: 2022 Tobias Schmidl
+#
+# SPDX-License-Identifier: CC0-1.0
+
+### Vim
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~