Merge pull request #1489 from regexident/gitignore

Improve gitignore, adding ‘.DS_Store’

.gitignore

@@ -1,2 +1,19 @@
-**/*.rs.bk
+
+# Created by https://www.gitignore.io/api/rust
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
 /target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock
+# Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# End of https://www.gitignore.io/api/rust
+
+# Used by macOS' file system to track custom attributes of containing folder
+.DS_Store