First attempt at LemmaIndexMapper's map implementation
Changed some stuff in LemmaIndexMapper, changed into output key and value as Text, fixed xml parsing error, added more delimiting options in Tokenizer
corrected LemmaIndexMapper, commented that class and GetArticlesMapper
fixed merge conflicts, classpath
removed discontinued PA1 project, renamed our project to PA1, removed unused target folder with old compiled jar
added comments
removed stanford-corenlp-3.4.1-models.jar from class path.
It's not needed for compiling the Java files since not referenced directly from our code. However everybody should keep a copy of this library and add it to the JAR execution class path whenever running our compiled code