added spaces in CHANGELOG and reversed conditional in name_for_url method

CHANGELOG.md

@@ -28,7 +28,7 @@ To install or update CocoaPods see this [guide](http://docs.cocoapods.org/guides
   [#2627](https://github.com/CocoaPods/CocoaPods/issues/2627)
   [#2665](https://github.com/CocoaPods/CocoaPods/issues/2665)
 
-* Fixes a crash when using file URLs as a source.
+* Fixes a crash when using file URLs as a source.  
   [Kurry Tran](https://github.com/kurry)
   [#2683](https://github.com/CocoaPods/CocoaPods/issues/2683)
 

lib/cocoapods/sources_manager.rb

@@ -422,11 +422,11 @@ module Pod
       #
       def name_for_url(url)
         base_from_host_and_path = lambda do |host, path|
-          if host.nil?
-            base = ''
-          else
+          if host
             base = host.split('.')[-2] || host
             base += '-'
+          else
+            base = ''
           end
           base += path.gsub(/.git$/, '').gsub(/^\//, '').
             split('/').join('-')