update README.md

README.md

@@ -2,16 +2,16 @@
 
 # Interpolation Library
 
-The NCEP general interpolation library contains Fortran 90
-subprograms to be used for interpolating between nearly all grids used
-at NCEP. The library is particularly efficient when interpolating many
-fields at one time.
+The NCEP general interpolation library contains Fortran 90 subprograms to be
+used for interpolating between nearly all grids used at NCEP. The library is
+particularly efficient when interpolating many fields at one time. It also
+contains routines for spectral transforms and other processing, including those
+previously contained in the NCEPLIBS-sp library.
 
 This is part of the [NCEPLIBS](https://github.com/NOAA-EMC/NCEPLIBS)
 project.
 
-There are currently six interpolation methods available in the
-library:
+There are currently six interpolation methods available in the library:
 - bilinear
 - bicubic
 - neighbor
@@ -27,11 +27,12 @@ To submit bug reports, feature requests, or other code-related issues including
 
 * NCEP/EMC Developers
 
-Code Manager: [George Gayno](mailto:george.gayno@noaa.gov)
+Code Manager: [Alex Richert](mailto:alexander.richert@noaa.gov)
 
 ### Prerequisites
 
-This package requires the [NCEPLIBS-sp](https://github.com/NOAA-EMC/NCEPLIBS-sp) library.
+This package does not link to any other libraries, but requires CMake (version
+3.15+) to build.
 
 ### Installing
 
@@ -40,27 +41,28 @@ mkdir build
 cd build
 cmake -DCMAKE_INSTALL_PREFIX=/path/to/install /path/to/NCEPLIBS-ip
 make -j2
-make test (or ctest --verbose)
+make test # (or ctest --verbose)
 make install
 ```
 
 ### Usage
 
-To use the ip library add `use ip_mod` to your Fortran code. It contains all the necessary public interfaces.
+Most routines and any public interfaces required can be accessed by adding `use
+ip_mod` to your Fortran code. Most spectral transform and processing subroutines
+can be accessed by calling them in your code (no `use` statement) and linking
+to the ip library at build time.
 
 ## 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.
+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.