ReadMe files for PackRat.

[AlliumApotheosis]

So. You should be able to get info about a given file by asking

[edaniszewski]

This should be fairly simple to do. Can just add another dimension to the file object associated with that file which would contain the readme info, then make quick master/api functions to allow it to be read.

There also the question of how we put in the readme info.. Does it get added with the create message? Does it need to be added after the file is created? etc..

[acencini]

make sure @rohailaltaf is in the loop on this as it has UI implications

@Kgespada

[acencini]

#144 is related