Updated the MacPorts text to reflect the availabilty of the OpenCoarrays port and to request installation of mpstats.

Author: Damian Rouson

INSTALL.md

@@ -26,23 +26,26 @@ source code.
 ### OS X###
 </a> 
 
-For now, OS X users will find it easiest to use OpenCoarrays inside the 
-Lubuntu virtual machine available in the [Sourcery Institute Store].
-
-In hopes of offering a straightforward, native OS X installation option, we 
-have submitted a Portfile  to the [MacPorts] package management software
-developers.  Please add yourself to the "cc" list on the corresponding [ticket]
-for updates.  Once Macports incorporates the OpenCoarrays Portfile, users will be
-to install OpenCoarrays by typing the following:
+OS X users might find it easiest to install OpenCoarrays using the [MacPorts]
+package management system.  After installing MacPorts, type the following:
 
     sudo port selfupdate  
     sudo port upgrade outdated  
     sudo port install opencoarrays
 
 where the "sudo" command requires Administrator privileges and where the first 
 two steps above are required only if the MacPorts ports were last updated prior 
-to the incorporation of the OpenCoarrays Portfile into MacPorts.  Repeating the
-above steps will also install future OpenCoarrays updates.
+to 30 September 2015, when the OpenCoarrays port was incorporated into MacPorts.  
+Repeating the first two steps above will also update OpenCoarrays to the latest
+release.
+
+Please also install the mpstats port as follows:
+
+    sudo port install mpstats
+
+which supports future OpenCoarrays development by providing download data the
+OpenCoarrays team can use in proposals for research grants and development 
+contracts.
 
 <a name="windows">
 ### Windows ###
@@ -55,6 +58,9 @@ contains dozens of other open-source software packages that support software
 development in modern Fortran.  See the [download and installation instructions]
 for a partial list of the included packages.  
 
+Alternatively, if you desire to use OpenCoarrays under Cygwin, please submit a 
+feature request via our [Issues] page.
+
 <a name="linux">
 ### Linux ###
 </a>