Change post-install messages

nmatrix-atlas.gemspec

@@ -12,28 +12,6 @@ Gem::Specification.new do |gem|
   gem.authors = ['John Woods', 'Chris Wailes', 'Aleksey Timin']
   gem.email =  ['john.o.woods@gmail.com']
   gem.license = 'BSD 3-clause'
-  gem.post_install_message = <<-EOF
-***********************************************************
-Welcome to SciRuby: Tools for Scientific Computing in Ruby!
-
-NMatrix requires a C compiler, and has been tested only
-with GCC 4.6+. We are happy to accept contributions
-which improve the portability of this project.
-
-Also required is ATLAS. Most Linux distributions and Mac
-versions include ATLAS, but you may wish to compile it
-yourself. The Ubuntu/Debian apt package for ATLAS WILL
-NOT WORK with NMatrix if LAPACK is also installed.
-
-More explicit instructions for NMatrix and SciRuby should
-be available on the SciRuby website, sciruby.com, or
-through our mailing list (which can be found on our web-
-site).
-
-Thanks for trying out NMatrix! Happy coding!
-
-***********************************************************
-EOF
 
   gem.files         = ["lib/nmatrix/atlas.rb","lib/nmatrix/lapack_ext_common.rb"]
   gem.files         += `git ls-files -- ext/nmatrix_atlas`.split("\n")

nmatrix.gemspec

@@ -28,10 +28,9 @@ NMatrix requires a C compiler, and has been tested only
 with GCC 4.6+. We are happy to accept contributions
 which improve the portability of this project.
 
-Also required is ATLAS. Most Linux distributions and Mac
-versions include ATLAS, but you may wish to compile it
-yourself. The Ubuntu/Debian apt package for ATLAS WILL
-NOT WORK with NMatrix if LAPACK is also installed.
+Faster matrix calculations and more advanced linear
+algebra features are available by installing either
+the nmatrix-atlas or nmatrix-lapacke plugins.
 
 More explicit instructions for NMatrix and SciRuby should
 be available on the SciRuby website, sciruby.com, or