update README.md

ts/index.ts

@@ -1,4 +1,4 @@
 import * as plugins from './smartdata.plugins'
 
 export * from './smartdata.classes.dbcollection'
-export * from './smartdata.classes.dbconnection'
+export * from './smartdata.classes.db'

ts/smartdata.classes.db.ts

@@ -1,11 +1,11 @@
 import * as plugins from './smartdata.plugins'
 
-export type TDbConnectionStatus = 'disconnected' | 'connected' | 'failed'
+export type TConnectionStatus = 'disconnected' | 'connected' | 'failed'
 
-export class DbConnection {
+export class Db {
     dbUrl: string
     db: plugins.mongodb.Db
-    status: TDbConnectionStatus
+    status: TConnectionStatus
 
     constructor(dbUrl: string) {
         this.dbUrl = dbUrl

ts/smartdata.classes.dbcollection.ts

@@ -1,10 +1,10 @@
 import * as plugins from './smartdata.plugins'
-import { DbConnection } from './smartdata.classes.dbconnection'
+import { Db } from './smartdata.classes.db'
 
 export class DbCollection<T> {
     collection: plugins.mongodb.Collection
-    constructor(nameArg: string, dbConnectionArg: DbConnection) {
-        this.collection = dbConnectionArg.db.collection(nameArg)
+    constructor(nameArg: string, dbArg: Db) {
+        this.collection = dbArg.db.collection(nameArg)
     }
 
     /**