Cleaned up documentation, added lacking Java annotations.

src/com/sk89q/worldedit/snapshots/Snapshot.java

@@ -39,8 +39,7 @@ public class Snapshot {
     /**
      * Construct a snapshot restoration operation.
      * 
-     * @param editSession
-     * @param dir
+     * @param repo
      * @param snapshot
      */
     public Snapshot(SnapshotRepository repo, String snapshot) {
@@ -53,6 +52,7 @@ public class Snapshot {
      * 
      * @return
      * @throws IOException
+     * @throws DataException 
      */
     public ChunkStore getChunkStore() throws IOException, DataException {
         if (file.getName().toLowerCase().endsWith(".zip")) {

src/com/sk89q/worldedit/snapshots/SnapshotRepository.java

@@ -102,7 +102,7 @@ public class SnapshotRepository {
     /**
      * Check to see if a snapshot is valid.
      *
-     * @param dir
+     * @param snapshot
      * @return whether it is a valid snapshot
      */
     public boolean isValidSnapshotName(String snapshot) {

src/com/sk89q/worldedit/snapshots/SnapshotRestore.java

@@ -58,6 +58,7 @@ public class SnapshotRestore {
     /**
      * Construct the snapshot restore operation.
      * 
+     * @param chunkStore 
      * @param region
      */
     public SnapshotRestore(ChunkStore chunkStore, Region region) {
@@ -131,7 +132,7 @@ public class SnapshotRestore {
      * Restores to world.
      *
      * @param editSession
-     * @param region
+     * @throws MaxChangedBlocksException 
      */
     public void restore(EditSession editSession)
             throws MaxChangedBlocksException {