Issue_95 Simplify Build Process

Add missing install command (for building NSIS packages on windows)
Made NSIS destination match client tools format.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #98 from GordonSmith/Issue_95

Issue_95 Simplify Build Process

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>