Created SearchLess class in Node.java

Now that the search design is done, everything else can follow the
pattern. Now we need to put all the searche classes in Node.java, and
write their own process( )
Merge branch 'master' of https://github.com/maryfeng/FinalSearchEngine

Conflicts:
	org/uiowa/cs2820/engine/Node.java
	org/uiowa/cs2820/engine/PrefixSearch.java
Merge branch 'master' of https://github.com/maryfeng/FinalSearchEngine

Conflicts:
	org/uiowa/cs2820/engine/ContainsSearch.java
	org/uiowa/cs2820/engine/Node.java