Create for_Ze_Devs.md

tentative means to get a dev environment set up for the compiler on OS X

docs/for_Ze_Devs.md

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+## Preparing for Compiler Development on OS X
+
+# Requirements
+- OS X Yosemite (10.10.5)
+- Homebrew
+- Xcode
+
+# Set up Homebrew
+```
+brew update
+brew install boost --c++11 # this takes a while
+brew install cmake qt5 cryptopp miniupnpc leveldb gmp libmicrohttpd libjson-rpc-cpp 
+brew install llvm --HEAD --with-clang
+```
+
+# Clone source repo and run this script
+```
+git clone --recursive https://github.com/ethereum/webthree-umbrella.git
+webthree-helpers/scripts/ethupdate.sh --no-push --simple-pull --project solidity #update solidity repo
+./webthree-helpers/scripts/ethbuild.sh --no-git --build-type Debug --project solidity --all --cores 4 -DFATDB=0 -DEVMJIT=0 -DETHASHCL=0 #install solidity
+```
+
+# Bringing it all together
+clone your forked repo, then:
+
+```
+cd ~/webthree-helpers/solidity
+mv build ../../yourForkedRepo
+```
+
+you are now ready to develop :)