Merge pull request #51 from ly29/master

Bug fix thanks, it is essential
plane UV possible in vertices. the same have to be to sphere, cylinder and so on
Update README
Merge pull request #53 from zeffii/patch-1

Update README
small optimization, avoid insert and pop

Instead replaces last value of list. From what I can see, this is the intention of the previous code.
instead of manual loop.
list comprehension, powerful feature of Python.
Merge pull request #54 from zeffii/patch-1

small optimization, avoid insert and pop
Merge pull request #55 from zeffii/patch-2

instead of manual loop.
Merge pull request #56 from zeffii/patch-3

list comprehension, powerful feature of Python.
Merge pull request #32 from nortikin/master

sync