Update documentation

docs/src/index.md

@@ -26,6 +26,32 @@ SurfaceFluxes.surface_conditions
 SurfaceFluxes.recover_profile
 ```
 
+# Parameters
+Convenience constructors are provided for the `SurfaceFluxesParameters` and the various `UniversalFunctions` parameter structs.
+To use them, you must first import CLIMAParameters:
+```julia
+import CLIMAParameters as CP
+import SurfaceFluxes.Parameters as SFP
+import SurfaceFluxes.UniversalFunctions as UF
+
+FT = Float64
+
+# SurfaceFluxesParameters requires a float type and a UniversalFunctionsParameters type
+SFP.SurfaceFluxesParameters(FT, UF.BusingerParams)
+
+# Or a TOML dict instead of a float type
+toml_dict = CP.create_toml_dict(Float64)
+SFP.SurfaceFluxesParameters(toml_dict, UF.GrachevParams)
+
+# UniversalFunctionsParameters only require a float type or a TOML dict.
+UF.BusingerParams(FT)
+UF.GryanikParams(FT)
+UF.GrachevParams(FT)
+UF.BeljaarsParams(toml_dict)
+UF.ChengParams(toml_dict)
+UF.HoltslagParams(toml_dict)
+```
+
 ## Universal Functions
 
 ```@docs