Add vim swap ignore and README build/install instructions

.gitignore

@@ -17,6 +17,7 @@ CMakeOutput.log
 CMakeError.log
 cmake-build-*/
 Makefile
+!Makefile
 *.ninja
 
 # Xcode
@@ -31,7 +32,8 @@ DerivedData/
 .vs/
 *.sublime-project
 *.sublime-workspace
-*.swp
+*.sw[a-p]
+.*.sw[a-p]
 *~
 
 # macOS

README.md

@@ -46,15 +46,36 @@ The VST3 plugin is written to:
 build/MonoStep_artefacts/Release/VST3/MonoStep.vst3
 ```
 
-### Installing
+### Quick start with make
 
-Copy the bundle into your DAW's VST3 directory:
+A `Makefile` wraps configure, build, and install. Just run `make`:
+
+```sh
+make          # build the plugin and copy it into ~/Library/Audio/Plug-Ins/VST3/
+make test     # build and run the headless host test
+make clean    # remove the build directory
+```
+
+### Installing (manual copy)
+
+The VST3 plugin ships as a macOS bundle (`MonoStep.vst3`). Copy the whole
+bundle into your DAW's VST3 directory:
 
 ```sh
 cp -R build/MonoStep_artefacts/Release/VST3/MonoStep.vst3 \
       ~/Library/Audio/Plug-Ins/VST3/
 ```
 
+Notes for macOS:
+
+- The per-user VST3 directory is `~/Library/Audio/Plug-Ins/VST3/`; create it
+  with `mkdir -p` if it does not exist. A system-wide copy would go to
+  `/Library/Audio/Plug-Ins/VST3/` but requires `sudo`.
+- When updating, remove the old bundle first (`rm -rf` on the `MonoStep.vst3`
+  inside the target directory) so stale files do not remain.
+- Your DAW may cache the plugin list — quit and relaunch it (or rescan plugins)
+  after installing before looking for MonoStep.
+
 ## Running the tests
 
 Build the headless host test and run it against the built plugin: