fixed installation for 8+ not being done in the right folder (#18)

Author: AlbertoParravicini

README.md

@@ -222,9 +222,9 @@ We checkout the commit corresponding to the current GraalVM release.
   ```console
   cd <directory containing this README>
   mx build
-  # Install it for Java 11
-  mkdir -p $GRAAL_HOME/languages/grcuda;
-  cp mxbuild/dists/jdk11/grcuda.jar $GRAAL_HOME/languages/grcuda/.;
+  # Install it for Java 8+;
+  mkdir -p $GRAAL_HOME/jre/languages/grcuda;
+  cp mxbuild/dists/jdk1.8/grcuda.jar $GRAAL_HOME/languages/grcuda/.;
   ```
 
 * `./install.sh` does this sequence of command for you, if you need to rebuild GrCUDA.
@@ -392,4 +392,4 @@ If you use GrCUDA in your research, please cite the following publication(s). Th
 
 ```
 Parravicini, A., Delamare, A., Arnaboldi, M., & Santambrogio, M. D. (2021, May). DAG-based Scheduling with Resource Sharing for Multi-task Applications in a Polyglot GPU Runtime. In 2021 IEEE International Parallel and Distributed Processing Symposium (IPDPS) (pp. 111-120). IEEE.
-```
+```

install.sh

@@ -2,6 +2,6 @@
 
 mx build;
 
-# Install for Java 11;
-mkdir -p $GRAAL_HOME/languages/grcuda;
-cp mxbuild/dists/jdk11/grcuda.jar $GRAAL_HOME/languages/grcuda/.;
+# Install for Java 8+;
+mkdir -p $GRAAL_HOME/jre/languages/grcuda;
+cp mxbuild/dists/jdk1.8/grcuda.jar $GRAAL_HOME/languages/grcuda/.;