Permit underscore for command name in Procfile.

lib/foreman/procfile.rb

@@ -83,7 +83,7 @@ private
 
   def parse(filename)
     File.read(filename).gsub("\r\n","\n").split("\n").map do |line|
-      if line =~ /^([A-Za-z0-9_]+):\s*(.+)$/
+      if line =~ /^([A-Za-z0-9_-]+):\s*(.+)$/
         [$1, $2]
       end
     end.compact

spec/foreman/procfile_spec.rb

@@ -18,6 +18,8 @@ describe Foreman::Procfile, :fakefs do
     procfile = Foreman::Procfile.new("Procfile")
     procfile["alpha"].should   == "./alpha"
     procfile["bravo"].should   == "./bravo"
+    procfile["foo-bar"].should == "./foo-bar"
+    procfile["foo_bar"].should == "./foo_bar"
   end
 
   it "can have a process appended to it" do

spec/spec_helper.rb

@@ -79,6 +79,8 @@ def write_procfile(procfile="Procfile", alpha_env="")
     file.puts "alpha: ./alpha" + " #{alpha_env}".rstrip
     file.puts "\n"
     file.puts "bravo:\t./bravo"
+    file.puts "foo_bar:\t./foo_bar"
+    file.puts "foo-bar:\t./foo-bar"
   end
   File.expand_path(procfile)
 end