Update documentation & README

Author: jchristopherson

README.md

@@ -203,11 +203,11 @@ For visualization purposes, here is an error plot from the data in the above exa
 ## Building CURVEFIT
 This library can be built using CMake.  For instructions on using CMake see [Running CMake](https://cmake.org/runningcmake/).
 
+## Documentation
+Documentation can be found [here](doc/refman.pdf)
+
 ## External Libraries
 This library relies upon 3 other libraries.
 - [NONLIN](https://github.com/jchristopherson/nonlin)
 - [LINALG](https://github.com/jchristopherson/linalg)
 - [FERROR](https://github.com/jchristopherson/ferror)
-
-## TO DO
-- C API

doc/Doxyfile

@@ -2202,7 +2202,7 @@ HIDE_UNDOC_RELATIONS   = YES
 # http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
 # Bell Labs. The other options in this section have no effect if this option is
 # set to NO
-# The default value is: NO.
+# The default value is: YES.
 
 HAVE_DOT               = YES
 
@@ -2358,7 +2358,9 @@ DIRECTORY_GRAPH        = YES
 # Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
 # to make the SVG files visible in IE 9+ (other browsers do not have this
 # requirement).
-# Possible values are: png, jpg, gif, svg, png:gd, png:gd:gd, png:cairo,
+# Possible values are: png, png:cairo, png:cairo:cairo, png:cairo:gd, png:gd,
+# png:gd:gd, jpg, jpg:cairo, jpg:cairo:gd, jpg:gd, jpg:gd:gd, gif, gif:cairo,
+# gif:cairo:gd, gif:gd, gif:gd:gd, svg, png:gd, png:gd:gd, png:cairo,
 # png:cairo:gd, png:cairo:cairo, png:cairo:gdiplus, png:gdiplus and
 # png:gdiplus:gdiplus.
 # The default value is: png.