Prepare for 0.4.7
Depend on CMake 2.6.4
Update NEWS
Fix ITK_Direction patch for ITK3 and add patch for ITK4
Link with -Wl,--as-needed

Closes: #716712
Release to unstable
Use markdown format for README file
Add .travis.yml file
.travis.yml: Install dependencies
.travis.yml: Ubuntu 12.04 does not have ITK4
.travis.yml: install missing dependencies
Add Build Status to README
Move build status to the bottom

[ci skip]
Cleanup
Ensure that images imported are 3D and SCALAR

Until #27 (Support 4D NIfTI Images) is fixed, importing images that are not
3D scalar is explicitly disabled, since it will cause a crash.

Fixes #29
Remove old patches

* ITK_Direction-ITK4.patch (merged upstream)
* ITK_Direction-ITK3.patch (merged upstream in ITK4)
* GDCM_metainfowarning.patch (no longer printing that warning)
Update NEWS

[ci skip]
.travis.yml: Update package cache before installing missing packages
Cleanup
Cleanup CMake stuff