[refactor][s]: last bits of content layout refactoring re frictionles…

…sdata/frictionlessdata.io#413.

* remove changelog.md as no content
* home: remove travis build plus add a link
* move up security_matrix.png

README.md

@@ -1,8 +1,6 @@
 # Frictionless Data Specifications
 
-[![Build Status](http://travis-ci.org/frictionlessdata/specs.svg?branch=master)](http://travis-ci.org/frictionlessdata/specs)
-
-This site is the home for *specifications* related to **Frictionless Data.**
+This site is the home for *specifications* related to **[Frictionless Data][site].**
 
 **Frictionless Data** is about removing the friction in working with data through the development of a set of tools, specifications, and best practices for publishing data. The heart of Frictionless Data is *Data Package*, a containerization format for any kind of data based on existing practices for publishing open-source software.
 

data-package/README.md

@@ -7,7 +7,6 @@ updated: 2 May 2017
 mediatype: application/vnd.datapackage+json
 descriptor: datapackage.json
 abstract: A simple container format for describing a coherent collection of data in a single 'package'. It provides the basis for convenient delivery, installation and management of datasets.
-layout: specs
 ---
 
 ## Introduction