Smalltalk examples added

smalltalk/helloworld/collections.st

@@ -0,0 +1,7 @@
+a := #(1 'hi' 3.14 1 2 (4 5))
+(a at: 3) displayNl        "3.14"
+(a reverse) displayNl      "((4 5) 2 1 3.14 'hi' 1)"
+(a asSet) displayNl        "Set(1 'hi' 3.14 2 (4 5))"
+.
+hash := Dictionary from: { 'water' -> 'wet'. 'fire' -> 'hot' }.
+hash at: 'fire' displayNl     "Prints:  hot"

smalltalk/helloworld/helloworld.st

@@ -0,0 +1 @@
+'Hello World!' displayNl

smalltalk/helloworld/somebasic.st

@@ -0,0 +1,5 @@
+"Everything, including a literal, is an object, so this works:"
+-199 abs displayNl                                               "199"
+'gst is cool' size displayNl                                     "11"
+( 'Slick' indexOf: $c ) displayNl                                     "4"
+'Nice Day Isn''t It?' asLowercase asSet asSortedCollection asString displayNl "' '?acdeinsty'"