Update Bootloader unlock info (#290)

One plus is easy to unlock
Asus dropped unlock ability on all phones.

Author: tsterbak

doc/unlocking_the_bootloader.md

@@ -1,6 +1,10 @@
 #### On unlocking the bootloader
-Devices by *Samsung*, *Google* and *Fairphone* make it fairly easy to unlock the bootloader and receive good support in the installer.
+Devices by *Samsung, Google, OnePlus, Fairphone* among others make it fairly easy to unlock the bootloader and receive good support in the installer.
+
+Some devices with require manual steps to unlock the bootloader. In general you will need to create an account at a vendor website and receive some code from there. OpenAndroidInstaller will try to guide you as far as possible. These vendors include *Sony, Motorola, Xiaomi* among others.
+
+Other phone vendors stops allowing to unlock the bootloader all together. There is nothing to be done if you didn't unlock your device in time. These vendors include *Huawei, LG, Asus* among others. Support for these vendors will always be very limited.
+
+You can find more info about the brands and their bootloader policy [here in French](https://wikilibriste.fr/fr/tutoriels-android/bootloader-unlock) 
 
-Some devices with require manual steps to unlock the bootloader. In general you will need to create an account at a vendor website and receive some code from there. OpenAndroidInstaller will try to guide you as far as possible. These vendors include *Sony, Motorola, Xiaomi* and *OnePlus* among others.
 
-Other phone vendors stops allowing to unlock the bootloader all together. There is nothing to be done if you didn't unlock your device in time. These vendors include *Huawei and LG* among others. Support for these vendors will always be very limited.