s/fastspawn/posix-spawn/ in project URLs

Author: rtomayko

HACKING

@@ -1,7 +1,7 @@
 Clone the project:
 
-   git clone http://github.com/rtomayko/fastspawn.git
-   cd fastspawn
+   git clone http://github.com/rtomayko/posix-spawn.git
+   cd posix-spawn
    bundle install
 
 Rake tasks can be run without further setup:

posix-spawn.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
   s.summary = 'posix_spawnp(2) for ruby'
   s.description = 'posix-spawn uses posix_spawnp(2) for faster process spawning'
 
-  s.homepage = 'http://github.com/rtomayko/fastspawn'
+  s.homepage = 'http://github.com/rtomayko/posix-spawn'
   s.has_rdoc = false
 
   s.authors = ['Ryan Tomayko', 'Aman Gupta']