add FS link, minor work on description text

DESCRIPTION

@@ -4,11 +4,11 @@ Title: Read FreeSurfer Neuroimaging File Formats
 Version: 0.1.0
 Author: Tim Schäfer
 Maintainer: Tim Schäfer <[email protected]>
-Description: Provides functions to read data from neuroimaging files in FreeSurfer binary formats. This includes the following file formats: 1) MGH/MGZ format files, which can contain multi-dimensional images or other data. Typically they contain time-series of three-dimensional brain scans acquired by MRI. They can also contain vertex-wise measures of surface morphometry data though. 2) FreeSurfer morphometry data files in binary 'curv' format. These contain one value per vertex for each vertex of a brain surface. These are typically values like the cortical thickness or area at each vertex.
+Description: Provides functions to read data from neuroimaging files in 'FreeSurfer' <http://freesurfer.net/> binary formats. This includes the following file formats: 1) MGH/MGZ format files, which can contain multi-dimensional images or other data. Typically they contain time-series of three-dimensional brain scans acquired by magnetic resonance imaging (MRI). They can also contain vertex-wise measures of surface morphometry data. The MGH format is named after the Massachusetts General Hospital, and the MGZ format is a compressed version of the same format. 2) FreeSurfer morphometry data files in binary 'curv' format. These contain vertex-wise surface measures, .i., one scalar value for each vertex of a brain surface mesh. These are typically values like the cortical thickness or area at each vertex.
 License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: true
-Suggests: 
+Suggests:
     knitr,
     rmarkdown,
     testthat (>= 2.1.0)