OpenID logo reborn

Following changes were made:

-Added gap around ascender for small and single-color reproduction.
-Gap increases in size when shape is scaled down.
-Stem: Increased ascender height; reduced isometric perspective.
-Arrow: Rotated, reshaped, non-square.
-Type: Increased letter-spacing; Helvetica Neue Regular (vs Light).
-Color: Darker gray for curve/arrow; Pantone DS 32-1 C for stem; black for type.

Experience it yourself, following links will help:

- http://shaderlab.com/openid/v3/openid-logo-v3-large.pdf
- http://shaderlab.com/openid/v3/openid-logo-v3-small.pdf
- http://shaderlab.com/openid/v3/openid-logo-v3-large-mono.pdf
- http://shaderlab.com/openid/v3/openid-logo-v3-small-mono.pdf