ProcaBase is lacking a README file

[Roland Haas]

Thorn ProcaBase from https://bitbucket.org/canuda/Proca.git is lacking a README file.

These files must contain author, maintainer and License information such as in the template README file produced by make newthorn

Cactus Code Thorn Foo
Author(s)    : John Doe
Maintainer(s): John Doe
Licence      : GPL
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1. Purpose

not documented

[Roland Haas]

I added a README file in git hash 3f3550e "ProcaBase: add Cactus README file" of Proca