use built-in vendor support instead of godeps

Makefile

@@ -9,7 +9,7 @@ export PATH := $(GOPATH)/bin:$(PATH)
 
 GOLDFLAGS=-ldflags '-r $${ORIGIN}/lib'
 
-GO=godep go
+GO:=$(if $(shell go version |grep 'go1.5'),GO15VENDOREXPERIMENT=1,) go
 
 BUILD_DATE=$(shell date +%Y%m%d)
 BUILD_REV=$(shell git rev-parse --short HEAD)
@@ -36,11 +36,11 @@ clean:
 
 test: imposm3 system-test-files
 	$(GO) test ./... -i
-	$(GO) test ./...
+	$(GO) test `$(GO) list ./... | grep -Ev '/vendor'`
 
 test-unit: imposm3
 	$(GO) test ./... -i
-	$(GO) test `$(GO) list ./... | grep -v 'imposm3/test'`
+	$(GO) test `$(GO) list ./... | grep -Ev '/test|/vendor'`
 
 test-system: imposm3
 	(cd test && make test)
@@ -63,8 +63,8 @@ upload-docs: docs
 
 build-license-deps:
 	rm LICENSE.deps
-	find ./Godeps/_workspace/src -iname license\* -exec bash -c '\
-		dep=$${1#./Godeps/_workspace/src/}; \
+	find ./vendor -iname license\* -exec bash -c '\
+		dep=$${1#./vendor/}; \
 		(echo -e "========== $$dep ==========\n"; cat $$1; echo -e "\n\n") \
 		| fold -s -w 80 \
 		>> LICENSE.deps \

README.md

@@ -112,7 +112,7 @@ There are some dependencies:
 
 #### Compiler
 
-You need [Go >=1.1](http://golang.org).
+You need [Go >=1.5](http://golang.org).
 
 #### C/C++ libraries
 
@@ -129,35 +129,28 @@ For best performance use [HyperLevelDB][libhyperleveldb] as an in-place replacem
 
 #### Go libraries
 
-Imposm3 uses the following libraries.
+Imposm3 uses the following Go libraries.
 
 - <https://github.com/jmhodges/levigo>
 - <https://github.com/golang/protobuf/proto>
-- <https://github.com/golang/protobuf/protoc-gen-go>
 - <https://github.com/lib/pq>
+- <https://gopkg.in/yaml.v2>
 
-`go get` will fetch these, but you can also use [godep][] to use a provided (vendorized) set of these dependencies.
-
-[godep]: https://github.com/tools/godep
-
-
-#### Other
-
-Fetching Imposm and the Go libraries requires [mercurial][] and [git][].
-
-[mercurial]: http://mercurial.selenic.com/
-[git]: http://git-scm.com/
-
+These libraries are already vendorized (i.e. the source code is included in the Imposm repository).
 
 #### Compile
 
-Create a new [Go workspace](http://golang.org/doc/code.html):
+Create a [Go workspace](http://golang.org/doc/code.html) by creating the `GOPATH` directory for all your Go code, if you don't have one already:
 
-    mkdir imposm
-    cd imposm
+    mkdir -p go
+    cd go
     export GOPATH=`pwd`
 
-Get Imposm 3 and all dependencies:
+Then you need to enable GO15VENDOREXPERIMENT, if you are using Go 1.5. You can skip this if you are using 1.6 or higher:
+
+    export GO15VENDOREXPERIMENT=1
+
+Get the code and install Imposm 3:
 
     go get github.com/omniscale/imposm3
     go install github.com/omniscale/imposm3