Single/double precision docs mismatch

[jefftyoder]

From the COSPv2.0 README:

Running the offline tests

Build the drivers.

Edit the files in model-interface/ if necessary. By default COSP is built using double-precision real variables and printing any error messages to the standard output.

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However in cosp_kinds.F90 the working precision appears to be set to single:

MODULE cosp_kinds
  implicit none
  INTEGER, PARAMETER :: sp = SELECTED_REAL_KIND( 6, 37)
  INTEGER, PARAMETER :: dp = SELECTED_REAL_KIND(12,307)
      INTEGER, PARAMETER :: wp = sp

END MODULE cosp_kinds