add new bulid.xml
update HW2.java and README.txt
delete Chinese words and add NCKU_Center_for_General_Education.java
Remove Error in Engineer Web
merge HW1 files(4 in total)
delete unneccessary files.
...
change the file encoding of ParserMain.java from big5 to UTF-8
makefile.sh is to compile all the java file in src.