Fix formula paths for manually specified names.

When the name of a new formula can't be autodetected, it defaults to the empty
string. When it then gets read from user input later on, the new name is used
but the formula path, based on the name, stays empty.

This change sets the path after a new name was read.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Library/Homebrew/cmd/create.rb

@@ -24,6 +24,7 @@ def create
           path = Pathname.new url
           print "Formula name [#{path.stem}]: "
           fc.name = __gets || path.stem
+          fc.path = Formula.path fc.name
         end
 
         unless ARGV.force?
@@ -58,7 +59,7 @@ class FormulaCreator
   attr :url
   attr :md5
   attr :name, true
-  attr :path
+  attr :path, true
   attr :mode, true
 
   def url= url