graphlog: document what "_" and "*" mean
Documenting "*" should've been a part of 9b3f95d9783d, but I somehow didn't
notice that the symbols are explained in the command's help text.
FROM fedora:20
RUN yum install -y \
gcc \
gettext \
make \
python-devel \
python-docutils \
rpm-build
# For creating repo meta data
RUN yum install -y createrepo