Added android slugs

Author: chinleung

README.md

@@ -123,6 +123,42 @@ You can find below the list of available slugs for the browser option.
 - MACOS_SNOW_LEOPARD_OPERA
 </details>
 
+<details>
+  <summary>ANDROID</summary>
+  
+- ANDROID_SAMSUNG_GALAXY_S9_PLUS
+- ANDROID_SAMSUNG_GALAXY_S8_PLUS
+- ANDROID_SAMSUNG_GALAXY_S10E
+- ANDROID_SAMSUNG_GALAXY_S10_PLUS
+- ANDROID_SAMSUNG_GALAXY_S10
+- ANDROID_SAMSUNG_GALAXY_NOTE_10_PLUS
+- ANDROID_SAMSUNG_GALAXY_NOTE_10
+- ANDROID_SAMSUNG_GALAXY_A10
+- ANDROID_SAMSUNG_GALAXY_NOTE_9
+- ANDROID_SAMSUNG_GALAXY_S9_PLUS
+- ANDROID_SAMSUNG_GALAXY_S9
+- ANDROID_SAMSUNG_GALAXY_NOTE_8
+- ANDROID_SAMSUNG_GALAXY_A8
+- ANDROID_SAMSUNG_GALAXY_S8
+- ANDROID_SAMSUNG_GALAXY_S7
+- ANDROID_SAMSUNG_GALAXY_NOTE_4
+- ANDROID_SAMSUNG_GALAXY_S6
+- ANDROID_GOOGLE_PIXEL_4_XL
+- ANDROID_GOOGLE_PIXEL_4
+- ANDROID_GOOGLE_PIXEL_3
+- ANDROID_GOOGLE_PIXEL_3_XL
+- ANDROID_GOOGLE_PIXEL_3A
+- ANDROID_GOOGLE_PIXEL_3A_XL
+- ANDROID_GOOGLE_PIXEL_2
+- ANDROID_GOOGLE_PIXEL
+- ANDROID_GOOGLE_NEXUS_6
+- ANDROID_GOOGLE_NEXUS_5
+- ANDROID_MOTOROLA_MOTO_G7_PLAY
+- ANDROID_MOTOROLA_MOTO_X_2ND_GEN
+- ANDROID_ONEPLUS_7
+- ANDROID_ONEPLUS_6T
+</details>
+
 The list of possible combinations of OS, Browsers and Browser Versions are available here: https://www.browserstack.com/automate/capabilities
 
 ## Security