ActionBuilder#move_by should send only Integer coordinates

I'm not sure why, but if I send coordinates like this to mouseMoveTo:
`@driver.action.move_to(element, 330.1, 13).click.perform`
it click in one part of page, wrong part
But if i send
`@driver.action.move_to(element, 330, 13).click.perform`
it wors fine.

Maybe it somewhat  depends on http call, that performs - they looks like
```
"{"element":"0.14091974799732143-9","xoffset":330.1,"yoffset":13}"
"{"element":"0.23202931091340706-9","xoffset":330,"yoffset":13}"
``` and fraction part somwehow messed up requests.

Same thing apply to `ActionBuilder#move_to`

Also add specs for `move_to` `move_by` with floating point

Signed-off-by: Alex Rodionov <p0deje@gmail.com>

rb/lib/selenium/webdriver/common/action_builder.rb

@@ -253,7 +253,7 @@ def double_click(element = nil)
 
       def move_to(element, right_by = nil, down_by = nil)
         if right_by && down_by
-          @actions << [:mouse, :move_to, [element, right_by, down_by]]
+          @actions << [:mouse, :move_to, [element, Integer(right_by), Integer(down_by)]]
         else
           @actions << [:mouse, :move_to, [element]]
         end
@@ -281,7 +281,7 @@ def move_to(element, right_by = nil, down_by = nil)
       #
 
       def move_by(right_by, down_by)
-        @actions << [:mouse, :move_by, [right_by, down_by]]
+        @actions << [:mouse, :move_by, [Integer(right_by), Integer(down_by)]]
         self
       end
 

rb/spec/unit/selenium/webdriver/action_builder_spec.rb

@@ -75,6 +75,19 @@
             context_click(element).perform
   end
 
+  it 'should move_to ignore floating point part of coordinate' do
+    expect(mouse).to receive(:move_to).with(element, -300, 400)
+
+    builder.move_to(element, -300.1, 400.1).perform
+  end
+
+  it 'should move_by ignore floating point part of coordinate' do
+    expect(mouse).to receive(:move_by).with(-300, 400)
+
+    builder.move_by(-300.1, 400.1).perform
+  end
+
+
   it "should drag and drop" do
     source = element
     target = Selenium::WebDriver::Element.new(bridge, 'element2')