jMoment can be called with a moment object

[pouyamn]

moment constructor do accept arrays and moment objects as input, so should jMoment

[pouyamn]

the test fails in cloning:

1. moment

   #clone
   clone of an invalid date is invalid:
   AssertionError: expected true to equal false

   • expected - actual
     -true
     +false

   at Context. (test.js:9:46665)

2. moment
   #clone should not affect on calendar system
   instance locale and clone:
   AssertionError: expected '1989/01/23' to equal '1367/11/03'

   • expected - actual
     -1989/01/23
     +1367/11/03

I don't know why it's happening, the problem with current code is that it destroies the input's config, if one uses a library which adds something to moment config through momentJS plugin system, the added context should be kept during cloning. An example of these libraries is full-calendar.js

Have anyone got any Ideas?