Simplify publish process

publish.md

@@ -1,9 +1 @@
-## To publish this package
-1. Make sure that @svgedit/packages is published if a new version is made (see publish.md in its corresponding folder)
-2. modify package.json to update:
-    - The new version of svgcanvas (if any)
-    - The new version of svgedit
-2. run 'npm install' to update the corresponding package-lock.json
-3. update the CHANGES.md
-4. run 'npm publish' (that will automate the build)
-5. create a commit with above changes called 'release x.y.z'
+see docs/ReleaseInstructions.md