[DOC] Installation

INSTALL.md

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+# Howto install Yanic
+
+## go
+### Install
+```sh
+cd /usr/local/
+wget https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz
+tar xvf go1.8.linux-amd64.tar.gz
+rm go1.8.linux-amd64.tar.gz
+```
+
+### Configurate
+put this lines into a shell place at root:
+```sh
+export GOPATH=/opt/go
+export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin
+```
+
+put this lines also into a shell place to use go by normal user:
+```sh
+export GOPATH=~/go
+export PATH=$PATH:$GOPATH/bin
+```
+
+## Yanic
+
+### Compile
+```sh
+go get -v -u github.com/FreifunkBremen/yanic/cmd/...
+```
+
+### Configurate
+```sh
+cp /opt/go/src/github.com/FreifunkBremen/yanic/config_example.toml /etc/yanic.conf
+```
+You only need to edit `/etc/yanic.conf` under section `[respondd]` the `interface` for a easy startup.
+And create the following folders:
+```sh
+mkdir -p /var/lib/collector
+mkdir -p /var/www/html/meshviewer/data
+```
+
+#### Standalone
+If you like to run a meshviewer standalone, just set `enable` under section `[webserver]` to `true`.
+Configurate the meshviewer to `/data/` and put the `build` directory of this [meshviewer](https://github.com/ffrgb/meshviewer) under `/var/www/html/meshviewer`.
+
+#### With webserver (Apache, nginx)
+Change following path under section `[nodes]` to what you need.
+For `nodes_path` and `graph_path` should be under the same folder for a meshviewer.
+
+### Service
+```bash
+cp /opt/go/src/github.com/FreifunkBremen/yanic/init/linux-systemd/yanic.service /lib/systemd/systemd
+systemctl daemon-reload
+systemctl start yanic
+systemctl enable yanic
+```