Streamer fixes

* url must be quoted inside the curl command otherwise '&' between
  params are interpreted by shells
* View url format updated
* Streamer yielded the last row returned by curl ("}]") as nil
* Specs

spec/couchrest/core/database_spec.rb

@@ -131,9 +131,16 @@ describe CouchRest::Database do
       rs = @db.view('first/test', :include_docs => true) do |row|
         rows << row
       end
-      rows.length.should == 4
+      rows.length.should == 3
       rs["total_rows"].should == 3
     end
+    it "should accept a block with several params" do
+      rows = []
+      rs = @db.view('first/test', :include_docs => true, :limit => 2) do |row|
+        rows << row
+      end
+      rows.length.should == 2
+    end
   end
 
   describe "GET (document by id) when the doc exists" do
@@ -711,4 +718,4 @@ describe CouchRest::Database do
   end
 
 
-end
+end