Update build instructions in README

Close #197

Signed-off-by: Hanno Braun <[email protected]>

Author: hannobraun

README.md

@@ -309,17 +309,20 @@ The results of the upload will be delivered via websocket with messages that loo
 
 ## Development
 
-From the project root dir executing:
+To clone the repository, run the following command:
 ```
-export GOPATH=$PWD
-go get
-go build
+go get github.com/arduino/arduino-create-agent
 ```
-will build the `arduino-create-agent` binary.
 
-`compile_webidebridge.sh` contains the cross-platform script we use to deploy the agent for all the supported platforms; it needs to be adjusted as per your `go` installation paths and OS.
+This will clone the repository into your [Go workspace](https://golang.org/doc/code.html#Workspaces) or create a new workspace, if one doesn't exist. You can set `$GOPATH` to define where your Go workspace is located.
+
+Now you can go to the project directory and compile it:
+```
+cd $GOPATH/src/github.com/arduino/arduino-create-agent
+go build
+```
 
-You can use `bootstrapPlatforms` function to compile the needed CGO-enabled environment
+This will create the `arduino-create-agent` binary.
 
 Other prerequisites are:
 * libappindicator (Linux only on Ubuntu `sudo apt-get install libappindicator1`)