Make Gyazo configurable

gyazo-script.diff

--- Gyazo.app/Contents/Resources/script
+++ Zyazo.app/Contents/Resources/script
@@ -2,6 +2,15 @@
 
 require 'net/http'
 
+def gyazo_read_defaults(name, alternative, namespace = 'com.gyazo.Gyazo')
+  value = `defaults read '#{namespace}' '#{name}' 2>/dev/null`
+  if $? == 0
+    value.chomp
+  else
+    alternative
+  end
+end
+
 # get id
 user = IO.popen("whoami", "r+").gets.chomp
 program = ARGV[0].to_s
@@ -38,9 +47,19 @@
 # upload
 boundary = '----BOUNDARYBOUNDARY----'
 
-HOST = 'gyazo.com'
-CGI = '/upload.cgi'
-UA   = 'Gyazo/1.0'
+HOST = gyazo_read_defaults('HOST', 'gyazo.com')
+CGI = gyazo_read_defaults('CGI', '/upload.cgi')
+UA = gyazo_read_defaults('UA', 'Gyazo/1.0')
 
 data = <<EOF
 --#{boundary}\r