Use tag in podspecs (#152)

Summary:
This diff uses `tag` instead of master branch and also updates the version number to the desktop sdk.
Pull Request resolved: https://github.com/facebook/Sonar/pull/152

Reviewed By: danielbuechele

Differential Revision: D8820016

Pulled By: priteshrnandgaonkar

fbshipit-source-id: ff2e554be55254b77c4e130b35b7299abbafa77d

xplat/Sonar/Sonar.podspec

@@ -1,18 +1,18 @@
 Pod::Spec.new do |spec|
   spec.name = 'Sonar'
-  spec.version = '0.0.1'
+  spec.version = '0.6.12'
   spec.license = { :type => 'MIT' }
   spec.homepage = 'https://github.com/facebook/sonar'
   spec.summary = 'SonarKit core cpp code with network implementation'
   spec.authors = 'Facebook'
   spec.source = { :git => 'https://github.com/facebook/Sonar.git',
-                  :branch => 'master' }
+                  :tag => 'v0.6.12' }
   spec.module_name = 'Sonar'
   spec.public_header_files = 'xplat/Sonar/*.h'
   spec.source_files = 'xplat/Sonar/*.{h,cpp,m,mm}'
   spec.libraries = "stdc++"
-  spec.dependency 'Folly'
-  spec.dependency 'RSocket'
+  spec.dependency 'Folly', '~>1.0'
+  spec.dependency 'RSocket', '~>0.10'
   spec.compiler_flags = '-DFB_SONARKIT_ENABLED=1 -DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1 -DFOLLY_HAVE_LIBGFLAGS=0 -DFOLLY_HAVE_LIBJEMALLOC=0 -DFOLLY_HAVE_PREADV=0 -DFOLLY_HAVE_PWRITEV=0 -DFOLLY_HAVE_TFO=0 -DFOLLY_USE_SYMBOLIZER=0 -Wall
     -std=c++14
     -Wno-global-constructors'