update readme

Author: Brian Sorahan

README.md

@@ -3,3 +3,26 @@
 This a collection of tiny programs that show off the
 capabilities of the sc package.
 
+## Usage
+
+### Start SuperCollider
+
+```
+scsynth -u 57120
+```
+
+### Start scids
+
+```
+go get -u github.com/scgolang/scids
+```
+
+```
+scids
+```
+
+### Run an example
+
+```
+go run PROGRAM
+```