Update build.gradle

[mikeyang01]

Add SLF4J-based logging, solve the following error:
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

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[mikeyang01]

I signed it!

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[samtstern]

@ytianhui I don't see any references to slf4j in our codebase, can you explain a little more about when this error occurs?

[mikeyang01]

@samtstern
Thank you for the reply^^/

Due to the following document, Sundial require Dependencies "org.slf4j.slf4j-api-1.7.25".
https://github.com/timmolter/Sundial
In my test,
adding compile 'org.slf4j:slf4j-api:1.7.25' still got same error,
but adding compile 'org.slf4j:slf4j-simple:1.7.25', no SLF4J errors showed.

[samtstern]

Apologies I never responded here but I still cannot see the connection between this repository and Sundial....

[samtstern]

This is a very old PR, going to close it since nobody else has mentioned this particular issue. Thank you for the contribution though!