Updated build script to only delete 'dist/npm'. Can't delete the bower dist directory because it will be a git sub repo.
Updated build script to only delete 'dist/npm'. Can't delete the bower dist directory because it will be a git sub repo.

serilog/serilog.js,codecapers/structured-log,structured-log/structured-log,codecapers/structured-log,structured-log/structured-log,lyallaward/structured-log,lyallaward/structured-log,serilog/serilog.js