Merge pull request #387 from LeSpocky/doc

doc: Use other doxygen feature to specify mainpage

Doxyfile

@@ -753,8 +753,7 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = README.md \
-                         .
+INPUT                  = 
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -891,7 +890,7 @@ FILTER_SOURCE_PATTERNS =
 # (index.html). This can be useful if you have a project on for instance GitHub
 # and want to reuse the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE =
+USE_MDFILE_AS_MAINPAGE = README.md
 
 #---------------------------------------------------------------------------
 # Configuration options related to source browsing

README.md

@@ -1,4 +1,4 @@
-`json-c`                       {#mainpage}
+`json-c`
 ========
 
 1. [Overview and Build Status](#overview)