update podspec to 1.0.7

TTRangeSlider.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "TTRangeSlider"
-  s.version          = "1.0.6"
+  s.version          = "1.0.7"
   s.summary          = "A slider that allows you to pick a range"
   s.description      = <<-DESC
                        A slider, similar in style to UISlider, but has two handles instead of one, allowing you to pick a minimum and maximum range.
@@ -9,7 +9,7 @@ Pod::Spec.new do |s|
   # s.screenshots     = "www.example.com/screenshots_1", "www.example.com/screenshots_2"
   s.license          = 'MIT'
   s.author           = { "Tom Thorpe" => "code@tomthorpe.co.uk" }
-  s.source           = { :git => "https://github.com/TomThorpe/TTRangeSlider.git", :tag => 'v1.0.6'  }
+  s.source           = { :git => "https://github.com/TomThorpe/TTRangeSlider.git", :tag => 'v1.0.7'  }
   s.platform     = :ios, '7.0'
   s.requires_arc = true