docs: update project readme

README.md

@@ -1,13 +1,75 @@
 # graphql-tag-swc-plugin
-> Info
-> # WIP
-
-> uses `swc_core` crate, use legacy branch for support with nextjs
 
 SWC plugin alternative to `babel-plugin-graphql-tag`
 
+## Installation
+
+```
+npm install -D graphql-tag-swc-plugin
+```
+
+## Usage
+
+### SWC
+
+Add following to swc config (below with default values):
+
+```
+jsc: {
+  experimental: {
+    plugins: [
+      ["graphql-tag-swc-plugin",
+        {
+          importSources: ["@apollo/client", "graphql-tag"],
+          gqlTagIdentifiers: ["gql"]
+        },
+      ],
+    ],
+  },
+},
+```
+
+### Next js
+
+Add following to next config (below with default values):
+
+```
+experimental: {
+  swcPlugins: [
+    ["graphql-tag-swc-plugin",
+      {
+        importSources: ["@apollo/client", "graphql-tag"],
+        gqlTagIdentifiers: ["gql"]
+      },
+    ],
+  ],
+},
+```
+
+## Configuration
+
+Following props are accepted by plugin currently, inline with babel alternative:
+
+1.  `importSources`:
+    > default: `["@apollo/client", "graphql-tag"]`
+
+import paths from where gql tag is imported for which plugin should compile graphql
+
+2. `gqlTagIdentifiers`:
+   > default: `["gql"]`
+
+Identifier by which graphql-tag will be imported.
+Example: Here `import { gql } from "@apollo/client`, `"gql"` is the identifier.
+
+## Contribution
+
+All contributions are welcome!
+For any bug / feature request please create a Pull request with fixture for the same whenever possible.
+
 ## Authors
+
 - @rishabh3112 - Rishabh Chawla
 
 ## License
+
 MIT