.newInstance is deprecated as of Java 9

[LeeTibbert]

This issue is a forget-me-not.

I accidentally built portable-scala-reflect using a Java version greater than 8.
There was a deprecation warning about the use of the, indeed deprecated, .newInstance().
From a quick grep, it looked like that may be used in a number of places.

I hope to get back to fix this after my current series of PRs to add Scala Native support.
I will not be offended if anybody gets this fixed before I can get back to it.

[LeeTibbert]

To check: ReadMe.md has an example using newInstance(). Is that the deprecated method or something valid.

[sideeffffect]

This has been fixed in #40

[gzm0]

TY