Fixes travis build.

Squashed commit of the following:

commit 8811389
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Tue Nov 15 21:24:03 2016 +0100

    Cleans up troibobasbfdb

commit 283e10b
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Tue Nov 15 21:12:03 2016 +0100

    Too bad bash isn't style insensitive.

commit 3cbf069
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Tue Nov 15 21:09:27 2016 +0100

    Attempt to add -lrt to linker flags.

commit 0f3cbfa
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Tue Nov 15 20:58:52 2016 +0100

    Print ldd version.

commit badc29b
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Tue Nov 15 20:50:35 2016 +0100

    Attempt to debug.

.travis.yml

@@ -8,7 +8,7 @@ install:
       wget http://nim-lang.org/download/nim-0.15.2.tar.xz
       tar -xf nim-0.15.2.tar.xz
       cd nim-0.15.2
-      sh build.sh
+      LDFLAGS=-lrt sh build.sh
       cd ..
 
 before_script: