Move install section into its own file

To keep the readme manageable and clear move help about how to build,
install and run into its own file.

INSTALL.md

@@ -0,0 +1,49 @@
+# Installation
+To build `mqrs` having the rust toolchain installed is mandatory.
+
+## Install Rust
+Install the Rust toolchain from [rustup.rs](https://rustup.rs).
+
+## Build `mqrs`
+`mqrs` can be built for development:
+```sh
+cargo b
+```
+
+or for releasing:
+```sh
+cargo b --release
+```
+
+## Build the `mqrs` Debian package
+For that [`cargo-deb`](https://github.com/mmstick/cargo-deb) is
+required, which can be installed with:
+```sh
+cargo install cargo-deb
+```
+
+A Debian package can be built with:
+```sh
+cargo deb
+```
+
+## Install `mqrs`
+When a Rust toolchain installed you can also install `mqrs`
+directly without cloning it manually:
+``` sh
+cargo install --git https://git.onders.org/finga/mqrs.git mqrs
+```
+
+or from within the project:
+```sh
+cargo install mqrs
+```
+
+## Run `mqrs`
+`mqrs` can either be run from the project directory with:
+```sh
+cargo b
+```
+
+or you can copy the produced binary somewhere else or link to them
+from `target/{debug,release}/mqrs` depending on which one you built.

README.md

@@ -1,55 +1,9 @@
 # mqrs
 `mqrs` is a small cli application to handle POSIX message queues.
 
-## Installation
-To build `mqrs` a rust toolchain is necessary.
-
-### Install Rust
-Install the Rust toolchain from [rustup.rs](https://rustup.rs).
-
-### Build `mqrs`
-`mqrs` can be built for development:
-```sh
-cargo b
-```
-
-or for releasing:
-```sh
-cargo b --release
-```
-
-### Build the `mqrs` Debian package
-For that [`cargo-deb`](https://github.com/mmstick/cargo-deb) is
-required, which can be installed with:
-```sh
-cargo install cargo-deb
-```
-
-A Debian package can be built with:
-```sh
-cargo deb
-```
-
-### Install `mqrs`
-When a Rust toolchain installed you can also install `mqrs`
-directly without cloning it manually:
-``` sh
-cargo install --git https://git.onders.org/finga/mqrs.git mqrs
-```
-
-or from within the project:
-```sh
-cargo install mqrs
-```
-
-### Run `mqrs`
-`mqrs` can either be run from the project directory with:
-```sh
-cargo b
-```
-
-or you can copy the produced binary somewhere else or link to them
-from `target/{debug,release}/mqrs` depending on which one you built.
+## Install `mqrs`
+For information about how to build, install and run `mqrs` please see
+[`INSTALL.md`](INSTALL.md).
 
 ## Using `mqrs`
 Depending on which backend you want to use there are different subsets