[emacs] Don't define unprefixed "string-empty-p" function
added simple instructions for how to use brew to install brew
cleaning up formatting on instructions
Merge pull request #341 from zt9/master

Added simple instructions for how to use brew to install ledger in OS X
Add git hook to skip continous integration

if the commit is not related to code under test.
[ci skip]
Add ledger formula to OS X install instructions
[ci skip]
Merge pull request #343 from afh/pull/git-hook

Add git hook to skip continous integration
fix minor typo
Minor fix: double spaces
query is a command
pxref already contains "see"
Fixes for consistency
Fixes:
- typo fixes
- @keywords consistency fixes
- add some @kindex and @cindex
- buffer names highlighted as @file{}
- menu item highlighted as @samp{}
M-x delete-trailing-whitespace
Document that buffer names should use @file{} keyword
Indented with Emacs: M-x fill-paragraph
Merge pull request #344 from thdox/fix-doc

Fix doc
Merge pull request #342 from afh/pull/readme

Add ledger formula to OS X install instructions
Fix crash when using --trace 10 or above

uint8_t is typedef'd to char, thus boost::lexical_cast treats it
as such instead of a number.
Set CMake policy CMP0042

to remove the warning below when running cmake.
In the long run changing the CMake rules to set MACOSX_RPATH
might be the better option.

  CMake Warning (dev):
    Policy CMP0042 is not set: MACOSX_RPATH is enabled by default.  Run "cmake
    --help-policy CMP0042" for policy details.  Use the cmake_policy
    command to set the policy and suppress this warning.
    MACOSX_RPATH is not specified for the following targets:

     libledger

  This warning is for project developers.  Use -Wno-dev to suppress it.