Fix typo in README.md (#86)

README.md

@@ -19,7 +19,7 @@ julia> using Pkg; Pkg.add("WeakRefStrings")
 
 ## Project Status
 
-The package is tested against Julia `0.6` and nightly on Linux, OS X, and Windows.
+The package is tested against Julia `1.6` and `nightly` on Linux, OS X, and Windows.
 
 ## Contributing and Questions
 
@@ -35,4 +35,4 @@ Contributions are very welcome, as are feature requests and suggestions. Please
 
 Usage of `WeakRefString`s is discouraged for general users. Currently, a `WeakRefString` purposely _does not_ implement many Base Julia String interface methods due to many recent changes to Julia's builtin String interface, as well as the complexity to do so correctly. As such, `WeakRefString`s are used primarily in the data ecosystem as an IO optimization and nothing more. Upon indexing a `WeakRefStringArray`, a proper Julia `String` type is materialized for safe, correct string processing. In the future, it may be possible to implement safe operations on `WeakRefString` itself, but for now, they must be converted to a `String` for any real work.
 
-Additional documentation is available at the REPL for `?WeakRefStringArray` and `?WeakRefString`.
+Additional documentation is available at the REPL for `?WeakRefStringArray` and `?WeakRefString`.