Attempt to modernize examples, but I'm not sure if they all still wor…

…k with my changes. Issue #108

examples/flickr_upload.rb

@@ -1,23 +1,22 @@
-$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
-
 require 'rubygems'
 require 'mechanize'
 
 agent = Mechanize.new
 
 # Get the flickr sign in page
-page  = agent.get('http://flickr.com/signin/flickr/')
+page  = agent.get 'http://flickr.com/signin/flickr/'
 
 # Fill out the login form
-form          = page.form_with(:name => 'flickrloginform')
+form          = page.form_with :name => 'flickrloginform'
 form.email    = ARGV[0]
 form.password = ARGV[1]
-page          = agent.submit(form)
+form.submit
 
 # Go to the upload page
-page  = agent.click page.link_with(:text => 'Upload')
+page  = page.link_with(:text => 'Upload').click
 
 # Fill out the form
 form  = page.forms.action('/photos_upload_process.gne').first
 form.file_uploads.name('file1').first.file_name = ARGV[2]
-agent.submit(form)
+form.submit
+

examples/mech-dump.rb

@@ -1,5 +1,3 @@
-$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
-
 require 'rubygems'
 require 'mechanize'
 

examples/proxy_req.rb

@@ -1,5 +1,3 @@
-$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
-
 require 'rubygems'
 require 'mechanize'
 

examples/rubyforge.rb

@@ -1,5 +1,3 @@
-$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
-
 # This example logs a user in to rubyforge and prints out the body of the
 # page after logging the user in.
 require 'rubygems'
@@ -17,6 +15,6 @@
 form.form_pw        = ARGV[1]
 
 # Submit the form
-page = agent.submit(form, form.buttons.first)
+page = form.submit form.buttons.first
 
 puts page.body # Print out the body

examples/spider.rb

@@ -1,19 +1,18 @@
-$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
-
 require 'rubygems'
 require 'mechanize'
 
 agent = Mechanize.new
 stack = agent.get(ARGV[0]).links
 
 while l = stack.pop
+  next unless l.uri
   host = l.uri.host
   next unless host.nil? or host == agent.history.first.uri.host
   next if agent.visited? l.href
 
   puts "crawling #{l.uri}"
   begin
-    page = agent.click(l)
+    page = l.click
     next unless Mechanize::Page === page
     stack.push(*page.links)
   rescue Mechanize::ResponseCodeError

lib/mechanize/form/field.rb

@@ -29,7 +29,7 @@ def <=> other
         return -1 if Hash === other.node
         node <=> other.node
       end
-      
+
       # This method is a shortcut to get field's DOM id.
       # Common usage: form.field_with(:dom_id => "foo")
       def dom_id