Added optional hourStep and secondStep attributes to time and datetime directives.

Author: g1eb

src/datetime-input.js

@@ -12,7 +12,9 @@ directive('datetimeInput', ['$document', '$timeout', function ($document, $timeo
       format: '=?',
       minDate:'=?',
       maxDate:'=?',
+      hourStep:'=?',
       minuteStep:'=?',
+      secondStep:'=?',
       onChange: '&',
       placeholder: '@',
       cssClass:'@',

src/time-input.js

@@ -12,7 +12,9 @@ directive('timeInput', ['$document', '$timeout', function ($document, $timeout)
       format: '=?',
       minDate:'=?',
       maxDate:'=?',
+      hourStep : '=?',
       minuteStep : '=?',
+      secondStep : '=?',
       onChange: '&',
       placeholder: '@',
       cssClass:'@',