Offline mode now works.

- Initialization now delegates do sdkman-init.sh
 - bash-runner now catches all SDKMAN_* environment variables.

Fixes issue #17
Unearthes issue #19

functions/sdk.fish

@@ -5,29 +5,6 @@ if not test -f "$sdkman_init"
   exit 0
 end
 
-# Runs the given command in bash, capturing some side effects
-# and repeating them on the current fish shell.
-# Returns the same status code as the given command.
-function __fish_sdkman_run_in_bash
-    # We need to leave stdin and stdout of sdk free for user interaction.
-    # So, pipe PATH (which might have changed) through a file.
-    # Now, getting the exit code of sdk itself is a hassle so pipe it as well.
-    # TODO: Can somebody get this to work without the overhead of a file?
-    set pipe (mktemp)
-    bash -c "$argv[1]; echo -e \"\$PATH\n\$?\" > $pipe"
-    set bashDump (cat $pipe; rm $pipe)
-
-    set bashPath $bashDump[1]
-    set sdkStatus $bashDump[2]
-    # If SDKMAN! succeeded, copy PATH here (might have changed)
-    if [ $sdkStatus = 0 ]
-        set newPath (string split : "$bashPath")
-        set -gx PATH $newPath
-    end
-
-    return $sdkStatus
-end
-
 # Declare the sdk command for fish
 function sdk -d "Manage SDKs"
     __fish_sdkman_run_in_bash "source $sdkman_init && sdk $argv"