updated acknowledgement in bTree.c

Updated acknowledgement to show where I learnt most of the tree balancing from.
Pointers of newly de-allocated memory are now made to point to NULL, after a free
Merge branch 'master' of github.com:odeke-em/wordSuggestions
Renamed function loadWord to getSuggestions, for clarity, included file constants.h, character counts for SL list printing capped at 80 chars per line
Merge branch 'master' of github.com:odeke-em/wordSuggestions
Samples of newest examination of waroftheworlds.txt
Added clarity to second argument of function isValidFile in src/utility.c
Adding features in the threaded processing work-splitter; Added samples from distributed/threaded processing of text file src/workSplitter.c on 5 threads
Fixed bug with erraneous comparison of words in src/wordLib.c
Added samples of the newest autoCorrection of file resources/waroftheworlds.txt
Added comment description for hashib as the string interning utility not the traditional hash map implementation
string interning utility description added to hashlib.h
Doing testing of self-balancing trees:one step closer to efficiency;corrected a few comparisons in function sameWord; plugging leaks -- made sure memory to contain dictionary in src/spellCorrect.c and src/workSplitter.c is freed
Eliminated bug with extra increment of loop variant in function 'sameWord(...)' in file src/wordLib.c
Taking out erraneous implementation of string-interning utility
Taking out tail-adding which is O(n) but checks for duplicates in favour of adding elements to the head which is O(1) but duplicate checking is not done
Right version of bTree.c
Oops, double free located and eliminated from each threading call
Started proper implementation of HashTable utility that I'll be incorporating to aid in normal lookup and also for string interning. Happy Halloween\!
Added function prototypes to include/bTree.h