reorganization and a little bit of code robustness, and implemented TweetRandom functionallity

analyzeUserInteractions.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/dghubble/go-twitter/twitter"
+)
+
+func analyzeUserInteractions(tweets []twitter.Tweet, words map[string]int) map[string]int {
+	var userInteractions = make(map[string]int)
+	for v, k := range words {
+		if strings.Contains(v, "@") {
+			userInteractions[v] = k
+		}
+	}
+	return (userInteractions)
+}