move unstable install and upgrade to local namespace

README.md

@@ -74,13 +74,13 @@ Stable versions can be obtained from the [releases page](https://github.com/reba
 The rebar3 escript can also extract itself with a run script under the user's home directory:
 
 ```bash
-$ ./rebar3 unstable install
+$ ./rebar3 local install
 ===> Extracting rebar3 libs to ~/.cache/rebar3/lib...
 ===> Writing rebar3 run script ~/.cache/rebar3/bin/rebar3...
 ===> Add to $PATH for use: export PATH=$PATH:~/.cache/rebar3/bin
 ```
 
-To keep it up to date after you've installed rebar3 this way you can use `rebar3 unstable upgrade` which
+To keep it up to date after you've installed rebar3 this way you can use `rebar3 local upgrade` which
 fetches the latest nightly and extracts to the same place as above.
 
 Rebar3 may also be available on various OS-specific package managers such as

src/rebar_prv_local_install.erl

@@ -15,7 +15,7 @@
 -include_lib("kernel/include/file.hrl").
 
 -define(PROVIDER, install).
--define(NAMESPACE, unstable).
+-define(NAMESPACE, local).
 -define(DEPS, []).
 
 %% ===================================================================

src/rebar_prv_local_upgrade.erl

@@ -14,7 +14,7 @@
 -include_lib("kernel/include/file.hrl").
 
 -define(PROVIDER, upgrade).
--define(NAMESPACE, unstable).
+-define(NAMESPACE, local).
 -define(DEPS, []).
 
 %% ===================================================================