wrap URL for PLOS in description file in <>

Author: sckott

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: rplos
 Title: Interface to the Search 'API' for 'PLoS' Journals
 Description: A programmatic interface to the 'SOLR' based
-    search 'API' (http://api.plos.org/) provided by the Public
+    search 'API' (<http://api.plos.org/>) provided by the Public
     Library of Science journals to search their articles.
     Functions are included for searching for articles, retrieving
     articles, making plots, doing 'faceted' searches,