Add some community and testing info to README.md.

Add some community and testing info to README.md.

This CL adds some more context to the README on the various test suites and
community mailing lists which are available.

R=thestig@chromium.org

Committed: https://pdfium.googlesource.com/pdfium/+/51cf5bc00dfa3033523355e3e74f3a47f7e46682

[dsinclair, 2015-10-15 23:53:58]

dsinclair@chromium.org changed reviewers:
+ thestig@chromium.org, tsepez@chromium.org

[dsinclair, 2015-10-15 23:53:58]

PTAL.

Wanted to write down some of the things I've found out.

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (left):

https://codereview.chromium.org/1412453004/diff/1/README.md#oldcode12
README.md:12: build system (recommended) rather than using your
platform-specific build
Ninja is shipped in depot_tools, so they should, in theory, already have it if
they've installed depot_tools.

[Tom Sepez, 2015-10-16 00:09:55]

very nice.

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (left):

https://codereview.chromium.org/1412453004/diff/1/README.md#oldcode12
README.md:12: build system (recommended) rather than using your
platform-specific build
On 2015/10/15 23:53:58, dsinclair wrote:
> Ninja is shipped in depot_tools, so they should, in theory, already have it if
> they've installed depot_tools.

ok

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (right):

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode48
README.md:48: * On Mac: `open build/all.xcodeproj`
nit: Is this code or a description of an action? should it not be `ticked`?

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode64
README.md:64: * testing/tools/run_corpus_tests.py
There's actually more than that.  See what the bots do.  There are pixel_tests
and javascript_tests run by testing/tools/run_{pixel,javascript}_tests.py

[Lei Zhang, 2015-10-16 00:14:12]

lgtm

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (left):

https://codereview.chromium.org/1412453004/diff/1/README.md#oldcode12
README.md:12: build system (recommended) rather than using your
platform-specific build
On 2015/10/15 23:53:58, dsinclair wrote:
> Ninja is shipped in depot_tools, so they should, in theory, already have it if
> they've installed depot_tools.

Yep. I may have shipped a few ninja binaries. :)

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (right):

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode47
README.md:47: * On Linux: `make pdfium\_test`
Just drop pdfium_test ?

"make" by itself builds all targets, right? It's been a while...

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode60
README.md:60: There are currently three test suites that can be run:
There's more...

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode79
README.md:79: * [PDFium
Reviews](https://groups.google.com/forum/#!forum/pdfium-reviews)
Do you want to mention pdfium-reviews and pdfium-bugs are generally read only?

[dsinclair, 2015-10-16 00:41:26]

https://codereview.chromium.org/1412453004/diff/1/README.md
File README.md (right):

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode47
README.md:47: * On Linux: `make pdfium\_test`
On 2015/10/16 00:14:12, Lei Zhang wrote:
> Just drop pdfium_test ?
> 
> "make" by itself builds all targets, right? It's been a while...

I don't have a linux box to check at the moment. I'm going to leave this in
until I can verify it does the right thing. I'll put up a new CL on Monday if
'make' is sufficient.

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode48
README.md:48: * On Mac: `open build/all.xcodeproj`
On 2015/10/16 00:09:55, Tom Sepez wrote:
> nit: Is this code or a description of an action? should it not be `ticked`?

open is a program on osx. So, open build/all.xcodeproj will launch xcode and
open the project for you.

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode60
README.md:60: There are currently three test suites that can be run:
On 2015/10/16 00:14:12, Lei Zhang wrote:
> There's more...

Acknowledged.

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode64
README.md:64: * testing/tools/run_corpus_tests.py
On 2015/10/16 00:09:55, Tom Sepez wrote:
> There's actually more than that.  See what the bots do.  There are pixel_tests
> and javascript_tests run by testing/tools/run_{pixel,javascript}_tests.py

Done.

https://codereview.chromium.org/1412453004/diff/1/README.md#newcode79
README.md:79: * [PDFium
Reviews](https://groups.google.com/forum/#!forum/pdfium-reviews)
On 2015/10/16 00:14:12, Lei Zhang wrote:
> Do you want to mention pdfium-reviews and pdfium-bugs are generally read only?

Done.

[dsinclair, 2015-10-16 00:42:48]

Committed patchset #3 (id:40001) manually as
51cf5bc00dfa3033523355e3e74f3a47f7e46682 (presubmit successful).

[Tom Sepez, 2015-10-16 18:18:07]

On 2015/10/16 00:42:48, dsinclair wrote:
> Committed patchset #3 (id:40001) manually as
> 51cf5bc00dfa3033523355e3e74f3a47f7e46682 (presubmit successful).

Ooops, I'm seeing unexpected backslashes when viewing
https://pdfium.googlesource.com/pdfium/.  I guess these aren't needed in code
blocks?