Update CHANGELOG + Style

CHANGELOG.md

@@ -9,6 +9,8 @@
     not working properly. [GH-778]
   - `VAGRANT_CWD` environmental variable can be used to set the CWD to
     something other than the current directory.
+  - Downloading boxes from servers that don't send a content-length
+    now works properly. [GH-788]
 
 ## 1.0.0 (March 6, 2012)
 

lib/vagrant/ui.rb

@@ -78,7 +78,7 @@ module Vagrant
       # to the UI. Send `clear_line` to clear the line to show
       # a continuous progress meter.
       def report_progress(progress, total, show_parts=true)
-        if total and not total == 0
+        if total && total > 0
           percent = (progress.to_f / total.to_f) * 100
           line    = "Progress: #{percent.to_i}%"
           line   << " (#{progress} / #{total})" if show_parts