updated README gradle commands to use the built in gradle wrapper

Author: johnscancella

README.md

@@ -160,24 +160,23 @@ List<BagitWarning> warnings = linter.lintBag(rootDir, Arrays.asList(BagitWarning
 ## Developing Bagit-Java
 Bagit-Java uses [Gradle](https://gradle.org/) for its build system. Check out the great [documentation](https://docs.gradle.org/current/userguide/userguide_single.html) to learn more.
 ##### Running tests and code quality checks
-Inside the bagit-java root directory, run `gradle check`.
+Inside the bagit-java root directory, run `./gradlew check`.
 ##### Uploading to maven central
 1. Follow their guides
   1. http://central.sonatype.org/pages/releasing-the-deployment.html
   2. https://issues.sonatype.org/secure/Dashboard.jspa
-2. Once you have access, to create an official release and upload it you should specify the version by running `gradle -Pversion=<VERSION> uploadArchives`
+2. Once you have access, to create an official release and upload it you should specify the version by running `./gradlew -Pversion=<VERSION> uploadArchives`
   1. *Don't forget to tag the repository!*
 
 ##### Uploading to jcenter
 1. Follow their guide
   1. https://github.com/bintray/bintray-examples/tree/master/gradle-bintray-plugin-examples
-2. Once you have access, to create an official release and upload it you should specify the version by running `gradle -Pversion=<VERSION> bintrayUpload`
+2. Once you have access, to create an official release and upload it you should specify the version by running `./gradlew -Pversion=<VERSION> bintrayUpload`
   1. *Don't forget to tag the repository!*
 
 ### Note if using with Eclipse
-Simply run `gradle eclipse` and it will automatically create a eclipse project for you that you can import.
+Simply run `./gradlew eclipse` and it will automatically create a eclipse project for you that you can import.
 
 ### Roadmap for this library
-* Further refine reading and writing of bags version 0.93-0.97
 * Fix bugs/issues reported with new library (on going)
 * Translate to various languages (on going)