Fix path of version script in environment

[autopp]

Fixes #4072 .

Changes proposed in this pull request:

• Source scripts/functions/version instead of scripts/version at scripts/environment

The modification of cc758aa seems to be insufficient.
When run source "/path/to/.rvm/scripts/rvm", the following warning will be output:

WARNING:
        Could not source '/path/to/.rvm/scripts/version' as file does not exist.
        RVM will likely not work as expected.

The warning will resolved by this patch.
I hope this helps.

[pkuczynski]

Looks good! Could you please add an entry in the CHANGELOG?

[autopp]

@pkuczynski Thank you for seeing this pull request. I updated CHANGELOG.

[pkuczynski]

Thanks!

[autopp]

@pkuczynski Thanks for merge 👍

[onediv]

.rvm/scripts/rvm: line 171: __rvm_version_installed: command not found
.rvm/scripts/functions/cli: line 157: __rvm_version_installed: command not found
rvm by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io/]

-for script in functions/version functions/selector cd functions/cli cli override_gem
+for script in version functions/selector cd functions/cli cli override_gem

cat scripts/version
#!/usr/bin/env bash

__rvm_version_website()
{
echo "https://rvm.io"
}

__rvm_version_authors()
{
echo "Michal Papis, Piotr Kuczynski, Wayne E. Seguin"
}

__rvm_version_copyright()
{
echo "(c) 2009-2017 $(__rvm_version_authors)"
}

__rvm_print_headline()
{
rvm_log "Ruby enVironment Manager ${rvm_version} $(__rvm_version_copyright)
"
}

__rvm_version_remote()
{
__rvm_curl -s --max-time 10 https://github.com/rvm/rvm/raw/master/VERSION || true
}

__rvm_version_installed()
{
echo "$(\command \cat "$rvm_path/VERSION") ($(\command \cat "$rvm_path/RELEASE" 2>/dev/null))"
}

cat scripts/functions/version
#!/usr/bin/env bash

__rvm_version_website()
{
echo "https://rvm.io"
}

__rvm_version_authors()
{
echo "Michal Papis, Piotr Kuczynski, Wayne E. Seguin"
}

__rvm_version_copyright()
{
echo "(c) 2009-2017 $(__rvm_version_authors)"
}

__rvm_version()
{
echo "Ruby enVironment Manager ${rvm_version} $(__rvm_version_copyright)"
}

now it works
~/.rvm/bin $ ./rvm -v
Ruby enVironment Manager 1.29.2 (master) (c) 2009-2017 Michal Papis, Piotr Kuczynski, Wayne E. Seguin

please fix this issue...