Merge pull request #2 from martong/master

global excludeSysHeaders and word_under_cursor functions (<cword>)
Added an option to ignore default mappings, in case user wants to go
with custom ones.
Change mappings to leader + acronym version. Leave CompleteAtCursor
unchanged as it is ideally a candidate for Ctrl+Space/C-X_C_U/Tab but we
don't want to interfere with users' mappings.
Updated readme.
Split DisplayResults function into 2, one for parsing rc output, another
for displaying location list.
Added unit test for parsing rc output.
Added missed scope prefix for results variable.
Added functions for listing/opening/closing projects.
Added a fucntion responsible for executing rc command with provided
arguments.
When performing 'jump to' check if there more than one choices. If yes,
show the location list, otherwise proceed with a jump.
Updated readme.
Added license.
Added JumpToParent.