Revert "Shellcheck ci scripts, add a small .editorconfig (#186)"

This reverts commit 7cfdc69b63.

It breaks self update

ci/before_deploy.sh

@@ -3,9 +3,10 @@
 set -ex
 
 main() {
-    src=$(pwd)
+    local src=$(pwd) \
+          stage=
 
-    case "$TRAVIS_OS_NAME" in
+    case $TRAVIS_OS_NAME in
         linux)
             stage=$(mktemp -d)
             ;;
@@ -17,16 +18,16 @@ main() {
     test -f Cargo.lock || cargo generate-lockfile
 
     # TODO Update this to build the artifacts that matter to you
-    cross rustc --bin topgrade --target "$TARGET" --release --all-features -- -C lto
+    cross rustc --bin topgrade --target $TARGET --release --all-features -- -C lto
 
     # TODO Update this to package the right artifacts
-    cp target/"$TARGET"/release/topgrade "$stage"/
+    cp target/$TARGET/release/topgrade $stage/
 
-    cd "$stage"
-    tar czf "$src"/"$CRATE_NAME"-"$TRAVIS_TAG"-"$TARGET".tar.gz ./*
-    cd "$src"
+    cd $stage
+    tar czf $src/$CRATE_NAME-$TRAVIS_TAG-$TARGET.tar.gz *
+    cd $src
 
-    rm -rf "$stage"
+    rm -rf $stage
 }
 
 main