Fix typos and misspellings

README.md

@@ -1917,7 +1917,7 @@ end
 
 ### Dealing with Date and Time
 
-Sinatra offers a `time_for` helper method that generates a Time objectfrom the
+Sinatra offers a `time_for` helper method that generates a Time object from the
 given value. It is also able to convert `DateTime`, `Date` and similar classes:
 
 ``` ruby

test/routing_test.rb

@@ -307,7 +307,7 @@ class RoutingTest < Test::Unit::TestCase
     assert_equal "format=", body
   end
 
-  it 'does not concatinate params with the same name' do
+  it 'does not concatenate params with the same name' do
     mock_app { get('/:foo') { params[:foo] } }
     get '/a?foo=b'
     assert_body 'a'

test/templates_test.rb

@@ -120,7 +120,7 @@ class TemplatesTest < Test::Unit::TestCase
     end
   end
 
-  it 'uses the default layout template if not really overriden' do
+  it 'uses the default layout template if not really overridden' do
     with_default_layout do
       render_app { render(:test, :hello, :layout => true) }
       assert ok?