add readme file

FGadvancer · web-flow · commit 9edeffbfb336 · 2021-11-26T17:57:08.000+08:00
diff --git a/README.md b/README.md
@@ -0,0 +1,2 @@
+# Open-IM-SDK-Core
+The IMSDK implemented by golang can be used in IOS, Android, PC and other platforms

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+# Open-IM-SDK-Core`
	`2`	`+The IMSDK implemented by golang can be used in IOS, Android, PC and other platforms`