Merge pull request #45 from guenaydin/adjustInstallationInstruction

add a missing option to add this package as a devDependencies

README.md

@@ -25,7 +25,7 @@ This tool only needs your editorconfig to check all files.
 Installation via npm/yarn is recommended:
 
 ```
-yarn add editorconfig-checker
+yarn add --dev editorconfig-checker
 ./node_modules/.bin/editorconfig-checker
 
 npm install --save-dev editorconfig-checker
@@ -40,7 +40,7 @@ Otherwise you could clone the repository and execute the script manually.
 ```
 git clone [email protected]:editorconfig-checker/editorconfig-checker.javascript.git
 && cd editorconfig-checker.javascript
-&& make setup 
+&& make setup
 && ./editorconfig-checker.javascript/dist/index
 ```
 
@@ -57,15 +57,15 @@ Then you could create a script in your `package.json` like this:
 
 To check multiple directories you could use it like this:
 
-```json 
+```json
 "scripts": {
     "lint:editorconfig": "editorconfig-checker src someOhterDir anohterDir"
 }
 ```
 
 You could also use a glob to check your files:
 
-```json 
+```json
 "scripts": {
     "lint:editorconfig": "editorconfig-checker ./src/{editorconfig,logger}/**/*"
 }
@@ -84,7 +84,7 @@ because the special characters(e.g. `|`, `*`, `.` or whatever) will be interpret
 Some examples:
 ```sh
 # will filter all files with json extension
-editorconfig-checker --exclude-pattern './**/*.json' 
+editorconfig-checker --exclude-pattern './**/*.json'
 editorconfig-checker --exclude-regexp '\\.json$'
 
 # will filter all files which has TestFiles in their name and json as extension
@@ -93,14 +93,14 @@ editorconfig-checker --exclude-regexp 'TestFiles|\\.json$'
 
 # will don't use default excludes and filter all files which has TestFiles in their name
 editorconfig-checker -i -d --exclude-pattern './**/*TestFiles*/*'
-editorconfig-checker --ignore-defaults --dotfiles --exclude-regexp 'TestFiles' 
+editorconfig-checker --ignore-defaults --dotfiles --exclude-regexp 'TestFiles'
 ```
 
 If you just want to filter for one string you don't have to worry and if you want to filter for more strings you could also pass the `--exclude-regexp|--exclude-pattern` option more than once like this:
 
 ```sh
-./node_modules/.bin/editorconfig-checker --exclude-regexp node_modules --exclude-regexp myBinary --exclude-regexp someGeneratedFile --exclude-regexp myPicture 
-./node_modules/.bin/editorconfig-checker --exclude-pattern './node_modules/**' --exclude-pattern './myBinary' --exclude-pattern './dist/someGeneratedFile' --exclude-pattern './pictures/myPicture' 
+./node_modules/.bin/editorconfig-checker --exclude-regexp node_modules --exclude-regexp myBinary --exclude-regexp someGeneratedFile --exclude-regexp myPicture
+./node_modules/.bin/editorconfig-checker --exclude-pattern './node_modules/**' --exclude-pattern './myBinary' --exclude-pattern './dist/someGeneratedFile' --exclude-pattern './pictures/myPicture'
 ```
 
 If you installed it manually you would have to do something like this:
@@ -131,7 +131,7 @@ available options:
     will print all files which are checked to stdout
 ```
 
-### Disabling single lines 
+### Disabling single lines
 
 It is possible to disable single lines with placing a comment - or theoretically
 any other string which includes `editorconfig-disable-line` on that line.
@@ -198,7 +198,7 @@ checked.
 
 ## Support
 
-If you have any questions or just want to chat join #editorconfig-checker on 
+If you have any questions or just want to chat join #editorconfig-checker on
 freenode(IRC).
-If you don't have an IRC-client set up you can use the 
+If you don't have an IRC-client set up you can use the
 [freenode webchat](https://webchat.freenode.net/?channels=editorconfig-checker).