updated README with dependency information (#36)

Updated README

---------

Co-authored-by: Ed <[email protected]>

README.md

@@ -11,9 +11,52 @@ This repository includes many utilites for RRFS application:
  - preprocess METAR cloud observations
  - preprocess NASA LaRC cloud products
 
-# how to compile
+# Prerequisites
+
+This package requires the following third party libraries:
+- [Jasper](http://www.ece.uvic.ca/~mdadams/jasper/)
+- [libpng](http://www.libpng.org/pub/png/libpng.html)
+- [zlib](http://www.zlib.net/)
+
+This package requires the following NCEPLIBS libraries:
+- [NCEPLIBS-bacio](https://github.com/NOAA-EMC/NCEPLIBS-bacio)
+- [NCEPLIBS-sp](https://github.com/NOAA-EMC/NCEPLIBS-sp)
+- [NCEPLIBS-ip](https://github.com/NOAA-EMC/NCEPLIBS-ip)
+- [NCEPLIBS-g2](https://github.com/NOAA-EMC/NCEPLIBS-g2)
+- [NCEPLIBS-g2tmpl](https://github.com/NOAA-EMC/NCEPLIBS-g2tmpl)
+- [NCEPLIBS-w3nco](https://github.com/NOAA-EMC/NCEPLIBS-w3nco)
+- [NCEPLIBS-w3emc](https://github.com/NOAA-EMC/NCEPLIBS-w3emc)
+- [NCEPLIBS-bufr](https://github.com/NOAA-EMC/NCEPLIBS-bufr)
+- [NCEPLIBS-wrf_io](https://github.com/NOAA-EMC/NCEPLIBS-wrf_io)
+
+This package requires the following GSI packages:
+- [GSI-ncdiag](https://github.com/NOAA-EMC/GSI-ncdiag)
+- [GSI](https://github.com/NOAA-EMC/GSI)
+
+# Installing
+
+```
 mkdir build
 cd build
 cmake PATH2ROOT
 make
+```
+
+# Disclaimer
+
+```
+The United States Department of Commerce (DOC) GitHub project code is
+provided on an "as is" basis and the user assumes responsibility for
+its use. DOC has relinquished control of the information and no longer
+has responsibility to protect the integrity, confidentiality, or
+availability of the information. Any claims against the Department of
+Commerce stemming from the use of its GitHub project will be governed
+by all applicable Federal law. Any reference to specific commercial
+products, processes, or services by service mark, trademark,
+manufacturer, or otherwise, does not constitute or imply their
+endorsement, recommendation or favoring by the Department of
+Commerce. The Department of Commerce seal and logo, or the seal and
+logo of a DOC bureau, shall not be used in any manner to imply
+endorsement of any commercial product or activity by DOC or the United
+States Government.