Merge pull request #584 from nawroth/shelldocs

Added -t option to shell index docs + some formatting.

shell/src/docs/dev/shell.txt

@@ -240,12 +240,13 @@ You can use Cypher to query the graph. For that, use the +start+ command.
 It's possible to query and manipulate indexes via the index command.
 Example: +index -i persons name+ (will index the name for the current node or relationship in the "persons" index).
 
-* +-g+ will do exact lookup in the index and display hits. You can supply -c with a command to be executed for each hit. 
-* +-q+ will ask the index a query and display hits. You can supply -c with a command to be executed for each hit.
-* +--cd+ will change current location to the hit from the query. It's just a convenience for using the -c option.
-* +--ls+ will do a listing of the contents for each hit. It's just a convenience for using the -c option.
+* +-g+ will do exact lookup in the index and display hits. You can supply +-c+ with a command to be executed for each hit. 
+* +-q+ will ask the index a query and display hits. You can supply +-c+ with a command to be executed for each hit.
+* +--cd+ will change current location to the hit from the query. It's just a convenience for using the +-c+ option.
+* +--ls+ will do a listing of the contents for each hit. It's just a convenience for using the +-c+ option.
 * +-i+ will index a key-value pair in an index for the current node/relationship. If no value is given the property value for that key for the current node is used as value.
-* +-r+ will remove a key-value pair (if it exists) from an index for the current node/relationship. Key and value is optional. 
+* +-r+ will remove a key-value pair (if it exists) from an index for the current node/relationship. Key and value is optional.
+* +-t+ will set the index type to work with, for example `index -t Relationship --delete friends` will delete the +friends+ relationship index. 
 
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