- added dragging attribute to the google-map directive
- this is important as to not rehash the functionality of "is dragging"
  that is already done in the directive controller
- this is more important that knowing if the center has changed as you
  only want to dynamically load new markers when dragging has stopped.
fixed animation bug
- delete animate was being called on the opt object when it should be
  opt.animation
- the fix is using animation, but to be consistent we might want to just
  use opt.animate everywhere.
removed the required attribute option for dragging on the google-map
directive
fixed comment for dragging attribute as optional
Merge pull request #50 from trafficland/feature/dragging_etc

- added dragging attribute to the google-map directive and animation fix
windows now have the ability to hide or not hide markers. via window
attribute isIconVisibleOnClick

- it should be noted that the default of hiding as marker has been
  inverted to default to show a marker.
-linking click on a marker by default, without the need for a window
- this is needed so that a parent controller can get the click event!
Merge pull request #51 from trafficland/feature/optionally_hide_marker_on_window_creation

windows now have the ability to hide or not hide markers. via window
isIconVisibleOnClick now is a local var to. Injecting into scope in a
directive is not angular apparently.
marker.icon is now watched via scope inside a marker directive
- on value change the google.marker's icon will be set
- marker will be removed from the map and then readded in the same
  position.
closeClick needs to be tracked if you are using markers.show on a perMarker basis, especially if you are only trying to allow one Window at a time.[C
Merge pull request #60 from trafficland/feature/icon_update_without_destroy

Feature/icon update without destroy
merging in Polyline support via ( mkyurchev )
- Add Polyline support
Example showing how to tie an external list of markers to open windows
of the markers on the map.
removed underscore requirement
Merge pull request #67 from nmccready/feature/demo_issue_65

Feature/demo issue 65
Insert newline
Replace Rails-style variable name do_show_window with correct Javascript
camel case showWindow.
Replace Rails-style variable name do_show_window with correct Javascript
camel case showWindow.
Merge branch 'r1-dev' of https://github.com/nlaplante/angular-google-maps.git into r1-dev