Add support of /etc/sysctl.d/*.conf in the sysctl parameter check template for RHEL 6
Add a template of sysctl parameter checks for RHEL 7, based on the one for RHEL 6
Add link to installation page to README
Turn download url into link.
Add BUILD.md for build from source instructions
Update template_sysctl
[bugfix][RHEL7] Update Red Hat references

- Update RHEL6 and Red Hat Enterprise Linux 6 references to RHEL 7
- Update Red Hat Enterprise Linux 6 links to point to Red Hat Enterprise Linux 7 documentation
Removing fedorahosted URL
[bugfix #64 & #65] [shared] Move kernel_module_{dccp,sctp}_disabled OVAL checks to shared (they work for both of RHEL6 & RHEL7)
[RHEL/6, RHEL/7] Create symlinks & update test attestations