new simple _examples/README.md, wiki should live only inside kataras/iris/wiki and the provided e-book

Former-commit-id: 350eafb0f70f8433e394e103ff93fa332ee00a05

_examples/dependency-injection/overview/datamodels/movie.go

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+// file: datamodels/movie.go
+
+package datamodels
+
+// Movie is our sample data structure.
+// Keep note that the tags for public-use (for our web app)
+// should be kept in other file like "web/viewmodels/movie.go"
+// which could wrap by embedding the datamodels.Movie or
+// declare new fields instead butwe will use this datamodel
+// as the only one Movie model in our application,
+// for the shake of simplicty.
+type Movie struct {
+	ID     uint64 `json:"id"`
+	Name   string `json:"name"`
+	Year   int    `json:"year"`
+	Genre  string `json:"genre"`
+	Poster string `json:"poster"`
+}