Remove linebreaks in README so it renders correctly in dockerhub

Author: ProgramFan

README.md

@@ -2,14 +2,8 @@
 
 Docker builder for gitit
 
-This is adpated from [Gitit-Bigger](https://github.com/menduo/gitit-bigger). I
-changed the base image to debian testing (debian 9) so that gitit-0.12 is
-available.
-
-This image tries hard to be small and simple. It contains only gitit related
-tools and is intended to be used as a base image for real gitit applications.
-See
-[gitit-templates-enhanced](https://github.com/ProgramFan/gitit-templates-enhanced)
-for an example.
+This is adpated from [Gitit-Bigger](https://github.com/menduo/gitit-bigger). I changed the base image to debian testing (debian 9) so that gitit-0.12 is available.
+
+This image tries hard to be small and simple. It contains only gitit related tools and is intended to be used as a base image for real gitit applications.  See [gitit-templates-enhanced](https://github.com/ProgramFan/gitit-templates-enhanced) for an example.
 
 `utils` contains some interesting utilities for solving integrating problems.