Makefile: document 'build' and 'minify' tasks
Makefile: document 'build' and 'minify' tasks

remotestorage/remotestorage.js,mcanthony/remotestorage.js,remotestorage/remotestorage.js,untitaker/remotestorage.js,remotestorage/remotestorage.js,theWebalyst/remotestorage.js,mcanthony/remotestorage.js,untitaker/remotestorage.js,theWebalyst/remotestorage.js,lewisl9029/remotestorage.js,lewisl9029/remotestorage.js