chore: only ignore top level directories in gitignore for some cases (#1588)

We accidentally added build/ to gitignore, causing any new files from
`scripts/build` to be ignored.

See: https://github.com/resin-io/etcher/pull/1547#discussion_r126790010
Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

.gitignore

@@ -1,5 +1,5 @@
 # Logs
-logs
+/logs
 *.log
 npm-debug.log*
 
@@ -9,10 +9,10 @@ pids
 *.seed
 
 # Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
+/lib-cov
 
 # Coverage directory used by tools like istanbul
-coverage
+/coverage
 
 # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
@@ -21,15 +21,14 @@ coverage
 .lock-wscript
 
 # Compiled binary addons (http://nodejs.org/api/addons.html)
-build
+/build
 
 # Dependency directory
 # https://docs.npmjs.com/misc/faq#should-i-check-my-node-modules-folder-into-git
 node_modules
-bower_components
 
-# Compiled Electron releases
-dist
+# Compiled Etcher releases
+/dist
 
 # Certificates
 *.spc

scripts/build/target-convert.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+###
+# Copyright 2017 resin.io
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###
+
+set -e
+set -u
+
+function usage() {
+  echo "Usage: $0"
+  echo ""
+  echo "Options"
+  echo ""
+  echo "    -r <target>"
+  echo "    -t <type (pkg)>"
+  exit 1
+}
+
+ARGV_TARGET=""
+ARGV_TYPE=""
+
+while getopts ":r:t:" option; do
+  case $option in
+    r) ARGV_TARGET=$OPTARG ;;
+    t) ARGV_TYPE=$OPTARG ;;
+    *) usage ;;
+  esac
+done
+
+if [ -z "$ARGV_TARGET" ] || [ -z "$ARGV_TYPE" ]; then
+  usage
+fi
+
+RESULT=""
+
+if [ "$ARGV_TYPE" == "pkg" ]; then
+  if [ "$ARGV_TARGET" == "linux" ]; then
+    RESULT=linux
+  elif [ "$ARGV_ARCHITECTURE" == "win32" ]; then
+    RESULT=win
+  elif [ "$ARGV_ARCHITECTURE" == "darwin" ]; then
+    RESULT=macos
+  fi
+else
+  echo "Unsupported target type: $ARGV_TYPE" 1>&2
+  exit 1
+fi
+
+if [ -z "$RESULT" ]; then
+  echo "Unsupported target: $ARGV_TARGET" 1>&2
+  exit 1
+fi
+
+echo "$RESULT"