Add Fibonacci in Moonscript (#4496)

* figured our3/8 not valid inputs, unsure hwo to check if input param is num

* how did i figure that out omg

* more professional message completed all 8 testcase

Author: RJRico17

archive/m/moonscript/fibonacci.moon

@@ -0,0 +1,16 @@
+-- fibonacci function
+fibonacci = (n) ->
+    -- set up a, b, for i until n, print "i: n" then update a & b as the fibonacci sequence
+    a, b = 1, 1
+    for i = 1, n
+        print "#{i}: #{a}"
+        a, b = b, a + b
+
+-- main
+-- check if arg params are numbers and are greater than 0
+if arg[1] and tonumber(arg[1]) ~= nil and tonumber(arg[1]) >= 0
+    fibonacci tonumber(arg[1])
+-- else, return usage error msg
+else   
+    print "Usage: please input the count of fibonacci numbers to output"
+