Merge pull request #77 from Sh3Rm4n/readme

Add README to Cargo.toml

Author: Sh3Rm4n

Cargo.toml

@@ -6,6 +6,7 @@ description = "Peripheral access API for STM32F3 series microcontrollers"
 keywords = ["arm", "cortex-m", "stm32f3xx", "hal"]
 license = "0BSD"
 name = "stm32f3xx-hal"
+readme = "README.md"
 repository = "https://github.com/stm32-rs/stm32f3xx-hal"
 documentation = "https://docs.rs/stm32f3xx-hal"
 version = "0.4.1"