Vars for repeated files
Fix rpm spec.in problems

Ignore docs directory for now.
Fixes RPM build errors:
    File not found:
    /home/jkline/rpmbuild/BUILDROOT/rubygem19-okta_hello-0.0.5-1.x86_64/home/jkline/.gem/ruby/1.9.1/doc/okta_hello-0.0.5

List entire file name instead of just path.

Bump version to 0.0.4
Set GEM_HOME to system directory.

gem1.9 installs to my home directory by default, thus creating rpm
packages that install to my home directory.
I do not know if this is the correct value for GEM_HOME, pending AWS
support ticket.

Bump version to 0.0.5