jsmnint_t typedef'd to allow easy changing of main int type
jsmntype_t extended to allow more checks
JSMN_STRICT now has simplified format checking via parser->expected
JSMN_NEXT_SIBLING allow for easy parsing to a parents next sibling

After the parse, primitive tokens can be queried with JSMN_PRI_MINUS for 
negative numbers, JSMN_PRI_DECIMAL for fractions, and JSMN_PRI_EXPONENT 
for numbers with exponents. JSMN_PRI_LITERAL denotes 'true', 'false', or 
'null'.

This undoes my previous comment preference, but I would rather keep c89 
compliance.
The Makefile not also compiles with the c89 standard. Removed some flags 
that have no use in this branch.

Updated jsmn.h to pass all available tests.
Modified testutil.h to better support jsmnint_t.
Remove a warning when compiling the tests because invalid characters are 
in the file for testing.

* Updated jsmn to allow for continuation of PRIMITIVEs after a 
JSMN_ERROR_PART error. Conditionals are split between lines for coverage 
tests. jsmn_defines.h documents and sets all of the possible build 
configurations.
* jsmn_utils added for better examples. The explode example is in the 
example folder.
* tests have been updated to correctly test different configurations.
* README.md updated with c89 comments.