Update README with details

README.md

@@ -1,2 +1,46 @@
-# katalon-studio-custom-headers-keywords-plugin
-Katalon Studio plugin to enable setting custom headers in web requests
+# Katalon Studio Custom Headers Plugin
+Katalon Studio plugin to enable setting custom headers in web requests.
+
+
+**Installation Options**
+---
+
+1. Download the plugin jar file from the [latest release]() and place it in the Plugins directory of your Katalon Studio installation.
+2. Reload the plugins in Katalon Studio by selecting `Plugin > Reload Plugins` from the main menu.
+3. You should see the plugin listed in the resulting dialog.
+
+**Usage**
+---
+
+1. Install the plugin as described above.
+2. Use the plugin method openBrowserWithCustomHeaders() in your test case to open a browser with custom headers.
+3. Proceed to use WebUI keywords as usual.
+
+```groovy
+import static com.kms.katalon.core.checkpoint.CheckpointFactory.findCheckpoint
+import static com.kms.katalon.core.testcase.TestCaseFactory.findTestCase
+import static com.kms.katalon.core.testdata.TestDataFactory.findTestData
+import static com.kms.katalon.core.testobject.ObjectRepository.findTestObject
+import static com.kms.katalon.core.testobject.ObjectRepository.findWindowsObject
+import com.kms.katalon.core.checkpoint.Checkpoint as Checkpoint
+import com.kms.katalon.core.cucumber.keyword.CucumberBuiltinKeywords as CucumberKW
+import com.kms.katalon.core.mobile.keyword.MobileBuiltInKeywords as Mobile
+import com.kms.katalon.core.model.FailureHandling as FailureHandling
+import com.kms.katalon.core.testcase.TestCase as TestCase
+import com.kms.katalon.core.testdata.TestData as TestData
+import com.kms.katalon.core.testng.keyword.TestNGBuiltinKeywords as TestNGKW
+import com.kms.katalon.core.testobject.TestObject as TestObject
+import com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords as WS
+import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI
+import com.kms.katalon.core.windows.keyword.WindowsBuiltinKeywords as Windows
+import internal.GlobalVariable as GlobalVariable
+import org.openqa.selenium.Keys as Keys
+
+CustomKeywords.'com.katalon.keywords.CustomWebDriver.openBrowserWithHeaders'([('foo') : 'bar', ('user-agent') : 'MyCustomAgent'])
+
+WebUI.navigateToUrl('https://httpbin.org/headers')
+
+WebUI.delay(5)
+
+WebUI.closeBrowser()
+```