extend README file

README.md

@@ -1,3 +1,80 @@
 # FreifunkManager [![Build Status](https://travis-ci.org/FreifunkBremen/freifunkmanager.svg?branch=master)](https://travis-ci.org/FreifunkBremen/freifunkmanager) [![Coverage Status](https://coveralls.io/repos/github/FreifunkBremen/freifunkmanager/badge.svg?branch=master)](https://coveralls.io/github/FreifunkBremen/freifunkmanager?branch=master)
 is a little software to manage gluon nodes with the help of ssh and yanic
 (used on the Breminale since 2017)
+
+## Preparations for Building
+Install Go 1.10 or newer:
+```
+mkdir -p ~/inst
+cd ~/inst
+wget https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz
+tar xf go1.10.3.linux-amd64.tar.gz
+export PATH=~/inst/go/bin/:$PATH
+export GOROOT=~/inst/go/
+```
+Set $GOPATH:
+```
+export GOPATH=$HOME/go
+```
+
+Install nodejs >= 4.8:
+```
+mkdir -p ~/inst
+cd ~/inst
+wget https://nodejs.org/dist/v8.11.3/node-v8.11.3-linux-x64.tar.xz
+tar xf node-v8.11.3-linux-x64.tar.xz
+export PATH=~/inst/node-v8.11.3-linux-x64/bin/:$PATH
+```
+
+Install yarn (https://yarnpkg.com/en/docs/install):
+```
+mkdir -p ~/inst
+cd ~/inst
+wget https://github.com/yarnpkg/yarn/releases/download/v1.7.0/yarn-v1.7.0.tar.gz
+tar xf yarn-v1.7.0.tar.gz
+export PATH=~/inst/yarn-v1.7.0/bin/:$PATH
+```
+
+## Building & Running
+Download and build freifunkmanager:
+```
+go get -t github.com/FreifunkBremen/freifunkmanager/...
+go get github.com/mattn/goveralls
+go get golang.org/x/tools/cmd/cover
+cd $GOPATH/src/github.com/FreifunkBremen/freifunkmanager/
+go build
+cd webroot
+yarn install
+yarn gulp build
+```
+Run:
+```
+./freifunkmanager -config config_example.conf
+```
+
+
+## Usage
+Visit http://localhost:8080/
+
+Navigation bar at top of page:
+- marker icon: (TODO)
+- List: show list of all known nodes
+  - use Edit link in last column of a node to edit its details; changes made on the Edit page are saved immediately
+  - to change just the hostname, double-click on hostname field in list and make your change
+- Map: show map of nodes
+  - use Layers icon in upper right corner to enable geojson overlay and view clients
+- Statistics: show statistics about nodes, clients, used channels...
+- Login with text field: enter password (value of "secret" in config file) and click "Login" to log in
+  - this is necessary to make any changes
+  - there is no user management; anybody who has the password has full access
+- blue rectangle on the far right: (TODO: connection status?)
+
+
+## Technical Details
+
+List of known access points will be retrieved from [Yanic](https://github.com/FreifunkBremen/yanic) (ie. representing live data from APs).
+Additionally, APs can be added manually by visiting a page like /#/n/apname (where "apname" is the node-id of the new AP), and then setting a hostname.
+
+Each browser tab has a websocket connection to the server, so changes made in one tab will appear immediately in other tabs as well
+
+All changes are saved to state file (eg. /tmp/freifunkmanager.json - can be changed in config file).