Add a section for development to README (#109)

Author: rintcius

README.md

@@ -30,3 +30,50 @@ The application takes the following arguments on the command line:
 ### Example
 
     dist/build/trypurescript/trypurescript 8081 'bower_components/purescript-*/src/**/*.purs'
+    
+# Development
+
+## 1. Client setup
+
+```
+git clone [email protected]:purescript/trypurescript.git
+cd trypurescript
+git co gh-pages
+
+bower install
+npm run build
+npm run bundle
+
+httpserver 8080 #eg with: alias httpserver='python -m SimpleHTTPServer'
+open http://localhost:8080
+```
+
+## 2. Work with local compile server
+
+```
+git clone [email protected]:purescript/trypurescript.git
+cd trypurescript
+
+stack build
+
+# use one of the backends
+cd staging/core
+# get the sources of the deps
+psc-package update
+
+# note: globs like **/src/** do not work
+stack exec trypurescript 8081 ".psc-package/psc-0.11.6/*/*/src/**/*.purs" "src/*.purs"
+# should output that is is compiling the sources (first time)
+# then: Setting phasers to stun... (port 8081) (ctrl-c to quit)
+```
+
+## 3. Point client to local compile server
+
+(instead of the ones at try.purescript.org)
+```
+# edit API.purs
+
+  , compile: compile "http://localhost:8081"
+  , getBundle: getDefaultBundle "http://localhost:8081"
+
+```