Disambiguate get function

In order to avoid conflict with the HTTPoison-provided get function and
its typespec, rename `get/3` to `client_get/3`. Perform the same
defensive rename for `post/3`.

lib/forcex/bulk.ex

@@ -59,34 +59,34 @@ defmodule Forcex.Bulk do
     request!(method, url, body, headers, extra_options() ++ options) |> process_response
   end
 
-  def get(path, headers \\ [], client) do
+  def client_get(path, headers \\ [], client) do
     url = "https://#{client.host}/services/async/#{client.api_version}" <> path
     raw_request(:get, url, "", headers ++ authorization_header(client), [])
   end
 
-  def post(path, body \\ "", client) do
+  def client_post(path, body \\ "", client) do
     url = "https://#{client.host}/services/async/#{client.api_version}" <> path
     json_request(:post, url, body, authorization_header(client), [])
   end
 
   @spec create_query_job(binary, map) :: job
   def create_query_job(sobject, client) do
     payload = %{"operation" => "query", "object" => sobject, "concurrencyMode" => "Parallel", "contentType" => "JSON"}
-    post("/job", payload, client)
+    client_post("/job", payload, client)
   end
 
   @spec close_job(job | id, map) :: job
   def close_job(job, client) when is_map(job) do
     close_job(job.id, client)
   end
   def close_job(id, client) when is_binary(id) do
-    post("/job/#{id}", %{"state" => "Closed"}, client)
+    client_post("/job/#{id}", %{"state" => "Closed"}, client)
   end
 
   @spec fetch_job_status(job | id, map) :: job
   def fetch_job_status(job, client) when is_map(job), do: fetch_job_status(job.id, client)
   def fetch_job_status(id, client) when is_binary(id) do
-    get("/job/#{id}", client)
+    client_get("/job/#{id}", client)
   end
 
   @spec create_query_batch(String.t, job | id, map) :: job
@@ -105,7 +105,7 @@ defmodule Forcex.Bulk do
     fetch_batch_status(id, job.id, client)
   end
   def fetch_batch_status(id, job_id, client) when is_binary(id) and is_binary(job_id) do
-    get("/job/#{job_id}/batch/#{id}", client)
+    client_get("/job/#{job_id}/batch/#{id}", client)
   end
 
   @spec fetch_batch_result_status(batch, map) :: list(String.t)
@@ -114,7 +114,7 @@ defmodule Forcex.Bulk do
   end
   @spec fetch_batch_result_status(id, id, map) :: list(String.t)
   def fetch_batch_result_status(batch_id, job_id, client)  when is_binary(batch_id) and is_binary(job_id) do
-    get("/job/#{job_id}/batch/#{batch_id}/result", client)
+    client_get("/job/#{job_id}/batch/#{batch_id}/result", client)
   end
 
   @spec fetch_results(id, batch, map) :: list(map)
@@ -123,7 +123,7 @@ defmodule Forcex.Bulk do
   end
   @spec fetch_results(id, id, id, map) :: list(map)
   def fetch_results(id, batch_id, job_id, client) when is_binary(id) and is_binary(batch_id) and is_binary(job_id) do
-    get("/job/#{job_id}/batch/#{batch_id}/result/#{id}", client)
+    client_get("/job/#{job_id}/batch/#{batch_id}/result/#{id}", client)
   end
 
   defp find_header(headers, header_name) do