Added alignment support and addSpacer method
rearranged a number of the source image locations. started adding some hand grabbed ones.

also added small bit about the script editor for any one with some hacking needs.
been advised that this is better style for protecting vars
couple of teeny tweaks to styling

- one to make sure bullet lists are using the same text colour as the paragraph text
- another to handle tt text in the same way as 'code' (but a bit bigger). looks like newer asciidoc (on my laptop) tags inline `text`as tt rather than code
some instructions for creating connections
adding image for nodeGraph docs - tooltip pop-up
fixing up some display gack manually in gimp
some fixes and extra content in the noodles section
small script example addition
rejigged autogenerated images to work with new approach to commands

- updated INSTALL script to do the simpler approach, reading the whole py file rather than trying to pass the cmds about as a string arg
- added a couple of new examples for the layouts section
- NOTE: most of these fail due to #477
Merge branch 'docsWIP' of https://github.com/bentoogood/gaffer into docsWIP
Fixed a bug in the pixel value inspector.
Closes issue #401.
Added failing test case.
changes to dynamically generated node reference

- restructured script to mirror the dynamicContentGenerators in the GafferUserGuide
- added check for import errors. lack of arnold was causing script to bomb out
sys.path has the cwd on it, so is picking up the Gaffer*.* files

skip it!
Fixed bug converting coshader array from fixed to variable length.

The problem occurred when there were gaps in the connections into the array.
Added Serialiser::postScript() method.

This allows finalisation steps to be performed after all plug connections have been made. The Shader and ParameterisedHolder serialisers now use it to load their contents after the scene has been set up. Prior to this they were loading before the plug connections were being made, making the loading/upgrade steps harder to code and more error prone.

Now the loading/upgrading is performed on a completely set up scene, the process is identical to when a shader is reloaded or a parameterised object upgraded interactively by the user.
Merge pull request #491 from johnhaddon/convertFixedLengthArraysToDynamic

Convert fixed length arrays to dynamic
Bumped version number and updated Changes file.
Fixed missing IE GafferRenderMan build.