adds a runner that parses files (and some fibo examples)

test/runners/fibo_recursice.cr

@@ -0,0 +1,6 @@
+def fibonacci_r( n )
+    return  n  if n <= 1 
+    fibonacci_r( n - 1 ) + fibonacci_r( n - 2 )
+end 
+
+puts fibonacci( 10 )

test/runners/fibo_times.cr

@@ -0,0 +1,9 @@
+def fibonacci_t(n)
+  a,b = 0,1
+  n.times do
+    printf("%d\n", a)
+    a,b = b,a+b
+  end
+end
+
+puts fibonacci_t( 10 )