Package management, before & after, config user

Username is not configurable in case you're not hip to using "captain". You
can now insert arbitrary commands before and after the deployment by way of
some variables (which aren't yet in the init logic) and added in support for
composer and npm install's post deploy

ship

@@ -5,22 +5,32 @@ case $# in
     # TODO go up the hierarchy to find .ship
     source .ship
 
-    ssh captain@$SERVER "
-      cd $DESTINATION
-      git pull origin master
-    "
+    COMMANDS="cd $DESTINATION;"
+
+    if [ -n "$BEFORE" ]; then
+        COMMANDS="$COMMANDS $BEFORE;"
+    fi
+
+    COMMANDS="$COMMANDS git pull origin master;"
+    COMMANDS="$COMMANDS [ -e composer.json ] && composer install;"
+    COMMANDS="$COMMANDS [ -e package.json ] && npm install;"
+
+    if [ -n "$AFTER" ]; then
+        COMMANDS="$COMMANDS $AFTER;"
+    fi
+
+    ssh $USERNAME@$SERVER "$COMMANDS"
     ;;
 
-  3)
-    if [ "$1" == "init" ]
-    then
-      SERVER=$2
-      DESTINATION=$3
+  4)
+    if [ "$1" == "init" ]; then
+      USERNAME=$2
+      SERVER=$3
+      DESTINATION=$4
       CLONEURL=`git config --get remote.origin.url`
 
       ssh captain@$SERVER "
-        if [ -a $DESTINATION ]
-        then
+        if [ -a $DESTINATION ]; then
           echo "Error: Destination exists"
           exit 1
         else
@@ -28,9 +38,9 @@ case $# in
         fi
       "
 
-      if [ $? -eq 0 ]
-      then
-        echo "SERVER=$SERVER" > .ship
+      if [ $? -eq 0 ]; then
+        echo "USERNAME=$USERNAME"       >  .ship
+        echo "SERVER=$SERVER"           >> .ship
         echo "DESTINATION=$DESTINATION" >> .ship
       fi
     else
@@ -39,7 +49,7 @@ case $# in
     ;;
 
   *)
-    echo "Error: Invalid number of arguments"
+    echo "Usage: ship [init username server destination]"
     exit 1
     ;;
 esac