[gui] Update README with build instructions

README.md

@@ -12,10 +12,36 @@ Configure workspace
 
 2. Navigate under `$GOPATH/src` and clone this repository
 
-3. At this point, you will be able to install the DFSS project with a simple command, anywhere from your computer:
+3. Install build dependencies in `dfss/` directory
 
 ```bash
-go install dfss/...
+dfss/build/deps.sh
+```
+
+4. At this point, you will be able to install the DFSS project with some simple commands
+
+- To install CLI applications:
+
+```bash
+go install dfss/dfssc # Client
+go install dfss/dfssp # Platform
+go install dfss/dfsst # TTP
+
+# or
+
+make install
+```
+
+- To build GUI for client into `bin/` directory (using docker image)
+
+```
+# You may have to run these commands as root due to docker (sudo won't work)
+
+# Prepare docker image, one time only
+make prepare_gui
+
+# Build
+make gui
 ```
 
 Run dfss modules
@@ -23,6 +49,6 @@ Run dfss modules
 
 ```bash
 dfssc help # Client
-dfssp help # Plaform
-dfssd help # Demonstrator
+dfssp help # Platform
+dfsst help # TTP
 ```