added more explanation to GeneratorInterface/GenFilters/interface/TotalKinematicsFilter.h

[andreh7]

Added more details about what this filter does in the comments. No code changes.

This pull request supersedes pull request #2039

[ktf]

No need to run tests.

[cmsbuild]

A new Pull Request was created by @andreh7 for CMSSW_7_1_X.

added more explanation to GeneratorInterface/GenFilters/interface/TotalKinematicsFilter.h

It involves the following packages:

GeneratorInterface/GenFilters

@vciulli, @nclopezo, @thuer, @cmsbuild, @bendavid, @Degano can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
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@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[vciulli]

Why this appeared as a new pull if it was merged and closed months ago?

[ktf]

We are cleaning up bypassed pull requests so that they have correct labels. Sorry for the noise.