Add npm keywords

1.1.3

Add npm keywords

Fix case with missing prefix/postfix

Now empty prefix and postfix is skipped.

Add missing files

The 1.1.0 version didn't contain build sources.

Introduce CLI version

MFR supports also the CLI version. To run MFR in the CLI mode install it first using npm install -g mfr.
Then you will be able to run MFR via the mfr command:

Usage: -m <mode> -s <source> -d <destination>

Options:
      --help            Show help                                      [boolean]
      --version         Show version number                            [boolean]
  -m, --mode            Application mode                     [string] [required]
  -s, --source          Source path                          [string] [required]
  -d, --destination     Destiatnion path                     [string] [required]
  -f, --formats         Handled formats                                  [array]
  -p, --pattern         Pattern                                         [string]
  -a, --appendix        Appendix                                        [string]
      --pre, --prefix   Prefix pattern                                  [string]
      --pos, --postfix  Prefix patern                                   [string]

Introduce MFR

Deliver basic library functionality. For more details see README.md.